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Disaggregation of Sales, Geographic Sales and Product Sales - Net Sales by Products and Services (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Oct. 01, 2021	Oct. 01, 2021	Sep. 30, 2022	Oct. 01, 2021
Product Information [Line Items]
Total other product sales		$ 4,093		$ 4,199	$ 11,797	$ 11,582
Total net sales	$ 76,046	76,046	$ 58,352	58,352	220,347	171,471
ICLs [Member]
Product Information [Line Items]
Revenue from contract with customer, excluding assessed tax		71,953		54,153	208,550	159,889
Cataract IOLs [Member]
Product Information [Line Items]
Total other product sales		2,191		2,525	7,640	9,324
Other surgical products [Member]
Product Information [Line Items]
Total other product sales		$ 1,902		$ 1,674	$ 4,157	$ 2,258

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