Disaggregation of Sales, Geographic Sales and Product Sales - Net Sales by Products and Services (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 29, 2024	Mar. 31, 2023
Product Information [Line Items]
Total other product sales		$ 205	$ 2,903
Total net sales		77,356	73,528
ICLs [Member]
Product Information [Line Items]
Revenue from contract with customer, excluding assessed tax		77,151	70,625
Cataract IOLs [Member]
Product Information [Line Items]
Total other product sales			1,476
Other surgical products [Member]
Product Information [Line Items]
Total other product sales	[1]	$ 205	$ 1,427

[1] Other surgical products include delivery systems and normal recurring sales adjustments such as sales return allowances.