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Geographic and Product Data (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Product Information [Line Items]
Net sales	$ 17,106	$ 15,866	$ 53,271	$ 47,316
Implantable Collamer Lenses [Member]
Product Information [Line Items]
Net sales	10,725	9,111	32,616	26,321
Intraocular Lenses [Member]
Product Information [Line Items]
Net sales	5,322	6,052	17,533	19,185
Core Products [Member]
Product Information [Line Items]
Net sales	16,047	15,163	50,149	45,506
Other Surgical Products [Member]
Product Information [Line Items]
Net sales	$ 1,059	$ 703	$ 3,122	$ 1,810

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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