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Geographic and Product Data (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2013	Jun. 29, 2012	Jun. 28, 2013	Jun. 29, 2012
Product Information [Line Items]
Net sales	$ 18,164	$ 15,942	$ 36,165	$ 31,451
Implantable Collamer Lenses [Member]
Product Information [Line Items]
Net sales	11,261	8,606	21,892	17,211
Intraocular Lenses [Member]
Product Information [Line Items]
Net sales	5,863	6,774	12,211	13,132
Core Products [Member]
Product Information [Line Items]
Net sales	17,124	15,380	34,103	30,343
Other Surgical Products [Member]
Product Information [Line Items]
Net sales	$ 1,040	$ 562	$ 2,062	$ 1,108

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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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