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Geographic and Product Data (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Geographic and Product Data [Line Items]
Net sales	$ 72,215	$ 63,783	$ 62,765
Implantable Collamer Lenses [Member]
Geographic and Product Data [Line Items]
Net sales	44,128	35,080	32,072
Intraocular Lenses [Member]
Geographic and Product Data [Line Items]
Net sales	24,153	25,971	27,547
Other Surgical Products [Member]
Geographic and Product Data [Line Items]
Net sales	$ 3,934	$ 2,732	$ 3,146

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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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