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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001167379-10-000081.txt : 20100706
<SEC-HEADER>0001167379-10-000081.hdr.sgml : 20100705
<ACCEPTANCE-DATETIME>20100512120821
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001167379-10-000081
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20100512

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALCON INC
		CENTRAL INDEX KEY:			0001167379
		STANDARD INDUSTRIAL CLASSIFICATION:	OPHTHALMIC GOODS [3851]
		IRS NUMBER:				980205094
		STATE OF INCORPORATION:			V8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		6201 SOUTH FREEWAY
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76134
		BUSINESS PHONE:		8175686248

	MAIL ADDRESS:	
		STREET 1:		BOSCH 69 6331 HUNENBERG
		CITY:			SWITZERLAND
		STATE:			V8
		ZIP:			0000
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>
<html>
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    <title>aclcorrspcomment200920f.htm</title>
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2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;1&#160;of
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Alcon,
Inc.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">B&#246;sch
69</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">P.O.
Box 62</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">H&#252;nenberg,
Switzerland</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Gary R.
Todd</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Reviewing
Accountant</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Division
of Corporation Finance</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">United
States Securities and Exchange Commission</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">100 F
Street, N.E.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Mail Stop
3030</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Washington,
DC&#160;&#160;20549</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Ladies
and Gentlemen:</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On behalf
of Alcon, Inc., a company incorporated in Switzerland (&#8220;Alcon&#8221;)(File No.
001-31269), set forth below is Alcon&#8217;s response to the comment on the annual
report on Form 20-F for the fiscal year ended December 31, 2009 filed by Alcon
on March 16, 2010 (the &#8220;2009 Form 20-F&#8221;) contained in the letter of the Staff of
the Division of Corporation Finance (the &#8220;Staff&#8221;) of the United States
Securities and Exchange Commission (the &#8220;Commission&#8221;) dated April 30,
2010.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">For the
convenience of the Staff, each of the Staff&#8217;s comments is reproduced below in
its entirety in bold and is followed by the response of Alcon.&#160;&#160;The
page reference below is to the respective document noted in the Staff&#8217;s
comment.</font></div>
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          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;2&#160;of
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    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Form 20-F for the fiscal
year ended December 31, 2009</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Item 5. Operating and
Financial Review and Prospects</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Novartis Transaction, page
57</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Staff Comment No.
1</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;You
disclose that consummation of the Novartis transaction would trigger change in
control provisions with respect to certain share-based payment and retirement
plans.&#160;&#160;Please quantify for us the expected impact of changes and
accelerated payments that would occur in the period of effectiveness of the
change in control; and, if expected to be material, please tell us how you
concluded that you should not supplement the narrative with quantified
disclosure of the expected amounts of the charges and accelerated
payments.&#8221;</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Alcon&#8217;s
Response</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">As
discussed in notes 8, 9, 13 and 16 to the consolidated financial statements,
change of control provisions are included in a number of agreements and
documents pertaining to the Company and to its compensation
plans.&#160;&#160;The timing of a change of control would affect the amount of
financial impact of charges and accelerated payments. In Item 5, on page 87, we
emphasize the acceleration of obligations that would result from a change of
control and cross-reference to the aforementioned notes to the consolidated
financial statements that provide additional information on the change of
control.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Determination
of the impact of a change of control on the retirement plans is
complex.&#160;&#160;In the periods prior to a change of control, the projected
benefit obligation increases with continued employee service and compensation
increases and varies with changes in discount rates and rates of return on plan
assets, both subject to the influences of many external
factors.&#160;&#160;Given the number of variables impacting the recorded amounts
related to the retirement plans in any given reporting period, combined with the
inability to project with any precision the specific point in time at which a
change of control would occur, management believed that calculation of a range
for public disclosure with any level of precision was premature.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">However,
based upon the number of employees that would vest upon a change of control,
management did believe the amounts would be &#8220;significant&#8221; and has indicated so
in note 16 to the consolidated financial statements.&#160;&#160;Management was
satisfied that indicating that the amounts would be significant would be
sufficient for an investor to understand the exposure given the time horizon
within which a change of control could occur.</font></div>
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            <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
            <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Factors
affecting the share-based payments include the remaining service period over
which awards vest and forfeitures.&#160;&#160;As more time passes, the amount to
be recognized upon a change of control decreases.&#160;&#160;Management
estimates that less than $2 million of expense would be accelerated into 2010
from future years.&#160;&#160;Depending upon the timing of a change of control,
there also may be a shift of expense within 2010 to earlier quarters in the
year.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;</font><br>&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
referenced paragraph in <font style="DISPLAY: inline; TEXT-DECORATION: underline">Operating and Financial
Review and Prospects</font> also indicates that the consummation of a purchase
and sale transaction under the option right is subject to regulatory
approvals.&#160;&#160;Because these approvals are not in Alcon&#8217;s control, the
timing of any regulatory approvals could not be projected with any level of
precision.&#160;&#160;Accordingly, management concluded that the disclosures in
the notes to the consolidated financial statements were appropriate under the
circumstances.&#160;&#160;As the timing within which regulatory approvals may be
granted becomes more narrowly defined, management plans to prepare a range of
actuarially based estimates for disclosure in future filings, beginning with the
second quarter of 2010.</font></div>
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        <div style="WIDTH: 100%" align="left">
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;4
of 11</font></div>
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        </div>
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    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Item 18. Financial
Statements</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Note 3. Supplemental Balance
Sheet Information, page F-15</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Staff Comment No.
2</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;We
see that cash and cash equivalents consist of interest bearing deposits and
repurchase agreements.&#160;&#160;With respect to repurchase agreements, please
respond to the following:</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Describe
      to us in detail your repurchase agreement transactions, the business
      purpose of the transactions and your accounting for those
      transactions.&#160;&#160;As you appear to be referring to securities held
      for short periods of time that you include in cash equivalents, tell us
      whether these assets represent securities under agreements to resell
      (i.e., reverse repurchase agreements) and of which you had obtained
      control or taken possession.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
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              <div><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Tell
      us the impact of such transactions on your financial statements as of the
      dates of each balance sheet presented in your Form 10-K and for the last
      three fiscal years then ended.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">For
      reverse repurchase agreements, describe to us the nature of the assets
      that you receive as collateral for your advances and explain to us how you
      evaluate the value and liquidity of the underlying collateral and how you
      account for the collateral during the
  arrangement.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">For
      repurchase agreements, if any, describe to us the securities you put up as
      collateral for your borrowings and how you account for the collateral
      during the arrangement.&#160;&#160;Tell us whether you account for any of
      these arrangements as sales for accounting purposes and if so, cite the
      accounting guidance that supports that
  treatment.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Provide
      us the calculations on which you based your conclusion that the
      disclosures required by Rule 4-08(m)(1) and 4-08(m)(2) of Regulation S-X
      were not required in your filings or supplementally provide us with the
      disclosure.&#8221;</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Alcon&#8217;s
Response</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">At
      December 31, 2009, the Company&#8217;s cash equivalents, reported in the
      Company&#8217;s annual report on Form 20-F, included $30 million of instruments
      that were generically termed repurchase agreements in note 3 to the
      consolidated </font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt">
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</font></div>
            <div style="WIDTH: 100%" align="left">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;5
of 11</font></div>
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              <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
            </div>
          </div>
        </div><br><br></div>
      <div>
        <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
              <td align="right" style="WIDTH: 36pt">
                <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#160;</font></div>
              </td>
              <td>
                <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">financial
      statements.&#160;&#160;If more strictly defined, these particular
      instruments were tri-party fully collateralized reverse repurchase
      agreements.&#160;&#160;They were transacted on December 31, 2009 and
      matured &#8220;overnight&#8221; on January, 4, 2010, the next business
      day.&#160;&#160;A financial institution other than the seller held the
      collateral for the Company&#8217;s
benefit.</font></div>
              </td>
            </tr></table>
      </div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
Company utilized this type of transaction to achieve higher yields on available
cash balances, while maintaining liquidity.&#160;&#160;These securities mostly
were recorded at cost, which approximated fair value, as indicated in note 5 to
the consolidated financial statements.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">No
      repurchase agreements or reverse repurchase agreements were included in
      cash equivalents at December 31, 2008 and 2007.&#160;&#160;Prior to 2009,
      no short term investments in these instruments were made with available
      cash balances.&#160;&#160;At any quarter end during 2009, the amount of
      such instruments never totaled more than $30 million, which is
      insignificant (1.1%) to the balance of cash equivalents of $2.8 billion
      reported in our Form 20-F.&#160;&#160;Total income from these instruments
      was less than $0.1 million in 2009, which is also
      insignificant.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      Company received municipal and corporate debt securities as collateral for
      its advances under the reverse repurchase agreements.&#160;&#160;The value
      and the liquidity of the underlying collateral were required to be between
      102% and 110%, depending upon the credit of collateral, of the advanced
      amount and were evaluated by an independent third-party
      custodian.&#160;&#160;The Company only recorded its advances under the
      agreements as cash equivalents at the time of entering the transactions
      and recorded the interest income primarily upon settlement.&#160;&#160;No
      entries were made to record the collateral or changes in collateral
      value.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">As
      indicated above, the term &#8220;repurchase agreements&#8221; was used in a generic
      sense to include reverse repurchase agreements.&#160;&#160;In future
      filings, the Company will more clearly describe these investments, if
      any.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">At
      the balance sheet date, there were no repurchase agreements, as strictly
      defined, and Regulation S-X, Rule 4-08(m)(1) did not apply.&#160;&#160;No
      additional disclosures under Rule 4-08(m)(2) were required in the
      Company&#8217;s annual report on Form 20-F for the reverse repurchase agreements
      because they did not meet the 10% threshold as specified in the
      Rule.&#160;&#160;The calculation was as
follows:</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Total
reverse repurchase agreements:&#160;&#160;$30 million</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Divided
by</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Total
assets:&#160;&#160;$8,686 million</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Equaled:&#160;&#160;0.35%.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">This is
less than the 10% threshold under the Rule.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div><br>
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</font></div>
        <div style="WIDTH: 100%" align="left">
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;6
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        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Note 5. Financial
Instruments, page F-21</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Fair Value by Category, page
F-23</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Staff Comment No.
3</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;Please
tell us why you believe it is appropriate to exclude cash equivalents from
disclosures provided pursuant to FASB ASC 820-10-50.&#160;&#160;In that regard,
please tell us whether investment securities included in cash equivalents are
considered held to maturity, available for sale or held for
trading.&#8221;</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Alcon&#8217;s
Response</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Cash
equivalents were excluded from the disclosures required by FASB ASC
820-10-50.&#160;&#160;&#160;At each balance sheet date, the Company&#8217;s cash
equivalents consisted almost entirely of balances from bank and money market
accounts with financial institutions reported at their carrying
values.&#160;&#160;As indicated in note 5, the carrying amounts, due to the
short term maturities and liquidity of these accounts, approximate fair
value.&#160;&#160;As indicated in the previous response, reverse repurchase
agreements represented an insignificant portion of cash
equivalents.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">These
balances were considered cash equivalents under FASB ASC 305-10-20 and reported
accordingly, rather than financial investments under FASB ASC 320-10-50, and for
that reason were not classified as held to maturity, available for sale or held
for trading.</font></div><br>
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        <div style="WIDTH: 100%" align="left">
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;7&#160;of
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        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Note 16.&#160;&#160;Pension
and Postretirement Benefits, page F-43</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Staff Comment No.
4</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;Please
tell us how you considered guidance from FASB ASC 715-20-50-4 in concluding that
it is appropriate to combine the disclosures for your foreign and domestic
retirement benefit plans.&#8221;</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Alcon&#8217;s
Response</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Alcon,
Inc. is a Swiss company with a jurisdiction of incorporation in H&#252;nenberg, the
canton of Zug, Switzerland.&#160;&#160;Our disclosures for retirement benefit
plans were combined into one disclosure as &#8220;foreign&#8221; plans.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In
addition, management believed that the approximately 35% for the 13 non-U.S.
plans (less than $200 million) of the total projected benefit obligation was not
so significant as to require separate disclosures.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
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2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;8&#160;of
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        </div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Staff Comment No.
5</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;Under
Weighted Average Assumptions as of December 31, please tell us how you applied
guidance from FASB ASC 715-20-50-1k.&#160;&#160;In that regard, it appears that
you should present both (1) the assumptions used to determine the benefit
obligation and (2) the assumptions used to determine net benefit
cost.&#8221;</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Alcon&#8217;s
Response</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
Company&#8217;s consistent practice has been to employ the same assumptions used to
calculate the benefit obligation for the determination of the succeeding year&#8217;s
net benefit cost.&#160;&#160;The weighted average assumptions as of December 31,
2008, which were disclosed, were the same assumptions utilized to determine the
2009 net benefit cost.&#160;&#160;The weighted average assumptions as of
December 31, 2009 are the assumptions that will be utilized to determine the
2010 net benefit cost.&#160;&#160;The weighed average assumptions for 2008 and
2007 net benefit costs have been disclosed in previous annual
reports.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Future
filings will include separate disclosures of the assumptions for the benefit
obligations and for the net benefit costs.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
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          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;9&#160;of
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        </div>
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    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Note
18.&#160;&#160;Commitments and Contingencies, page F-51</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Staff Comment No.
6</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;We
refer to the paragraph on page F-58 addressing the contingency regarding the
expedited return of assets held by Lehman.&#160;&#160;Tell us the amount of the
assets involved and the potential period of exposure.&#8221;</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Alcon&#8217;s
Response</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
paragraph described above contains a cross-reference to note 15 of the
consolidated financial statements.&#160;&#160;On page F-43, note 15 includes the
following paragraph (amounts in millions):</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 18pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;During
2008, Lehman Brothers International (Europe) London filed for administration in
England.&#160;&#160;At that time the Company's cash and cash equivalents
included $707 of short term securities held in a segregated custodial account of
Lehman Brothers International (Europe) London pursuant to a Custody
Agreement.&#160;&#160;Nestl&#233; invoiced the Company in December 2008, and in 2009
the Company reimbursed Nestl&#233;, for a total of $5 in fees paid by Nestl&#233; to the
Joint Administrators of Lehman Brothers International (Europe) (in
administration) related to the release of the short-term securities held in the
custodial account.&#160;&#160;This amount of fees is subject to adjustment
depending on the final costs incurred to settle the administration of Lehman
Brothers International (Europe).&#8221;</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
amount of the assets was $707 million.&#160;&#160;This contingency arose from an
administration proceeding in England.&#160;&#160;Management cannot predict the
end of the exposure period because the proceeding is not within the Company&#8217;s
control and has not been limited to any period.</font></div>
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          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;10&#160;of
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        </div>
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    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Item 15.&#160;&#160;Controls
and Procedures, page 147</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Staff Comment No.
7</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;We
refer to your disclosure in the second paragraph in this section that disclosure
controls and procedures provide reasonable assurance that information is
&#8220;recorded, processed, summarized and reported.&#8221;&#160;&#160;In future filings,
please revise to clarify, if true, that your officers concluded that your
disclosure controls and procedures are also effective to ensure that information
required to be disclosed in reports that you file or submit under the Exchange
Act is accumulated and communicated to your management, including your principal
executive and principal financial officers, or persons performing similar
functions, as appropriate to allow timely decisions regarding required
disclosure.&#160;&#160;See Exchange Act Rule 13a-15(e).&#8221;</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Alcon&#8217;s
Response</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In future
filings, the Company will add the following sentence to the second paragraph of
Item 15:</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#8220;Based on
this evaluation, the Company's chief executive officer and its chief financial
officer concluded that as of the Evaluation Date, the Company's disclosure
controls and procedures also were effective to provide reasonable assurance that
material information required to be disclosed by the Company in reports it files
or submits under the Exchange Act were accumulated and communicated to the
Company&#8217;s chief executive officer and its chief financial officer, as
appropriate to allow timely decisions regarding required
disclosure.&#8221;</font></div>
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          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">May 11,
2010</font></div>
          <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Page&#160;11&#160;of
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          <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
Company acknowledges that:</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">the
      Company is responsible for the adequacy and accuracy of the disclosure in
      the filing;</font></div>
            </td>
          </tr></table>
    </div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Staff
      comments or changes to disclosure in response to Staff comments do not
      foreclose the Commission from taking any action with respect to the
      filing; and</font></div>
            </td>
          </tr></table>
    </div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
            <td align="right" style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">the
      Company may not assert Staff comments as a defense in any proceeding
      initiated by the Commission or any person under the federal securities
      laws of the United States.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><br>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">If you
would like to discuss any of Alcon&#8217;s responses to the Staff&#8217;s comments, please
contact Mark Roewe at (817) 551-8731 or Monte Smith at (817) 615-2853 or the
undersigned in writing at the Company&#8217;s U.S. offices located at 6201 South
Freeway, Fort Worth, Texas 76134-2099.</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Very
truly yours,</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt">/s/ Richard J. Croarkin<br></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Richard
J. Croarkin</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Senior
Vice President, Finance and Chief Financial Officer</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">BY
EDGAR</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Copies
to:</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Mark A
Roewe</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Monte W.
Smith</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Elaine
Whitbeck, Esq.</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Jeanne
Bennett</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">BY
FAX</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div><br><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div><br></body>
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