Organization and Description of Business and Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 27, 2024 USD ($) Segment	Dec. 29, 2023 USD ($)	Dec. 29, 2023 USD ($)	Dec. 30, 2022 USD ($)
Organization And Description Of Business And Accounting Policies [Line Items]
Number of operating segments | Segment	1
Revenue, Remaining Performance Obligation, Amount	$ 0
Deferred Revenues	0	$ 0	$ 0	$ 0
Goodwill	$ 1,786,000	1,786,000	1,786,000
Impairment of intangible assets		154,000
Percentage of deduction in GILTI	50.00%
Capitalized cloud-based software implementation costs	$ 15,763,000	2,406,000	2,406,000
Capitalized Computer Software, Amortization	0	0
ICLs shipped	27,500,000
Revenue recognized	$ 0	$ 0	$ 0
Board of Directors
Organization And Description Of Business And Accounting Policies [Line Items]
Option Vesting Term	1 year
Minimum | Executive Officers and Employees
Organization And Description Of Business And Accounting Policies [Line Items]
Option Vesting Term	3 years
Maximum | Executive Officers and Employees
Organization And Description Of Business And Accounting Policies [Line Items]
Option Vesting Term	4 years
Patents And Licenses | Japan | Cataract IOLs
Organization And Description Of Business And Accounting Policies [Line Items]
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]		Selling, General and Administrative Expense
Impairment of intangible assets		$ 154,000,000
Patents And Licenses | Minimum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Patents And Licenses | Maximum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Customer Relationships
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Developed technology | Minimum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Developed technology | Maximum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Customer Concentration Risk | Trade Accounts Receivable | China [Member]
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration risk, percentage	58.00%	70.00%
Customer Concentration Risk | Sales Revenue, Net | China [Member]
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration risk, percentage	51.00%	58.00%		52.00%
Vendor Concentration Risk | One Vendor | Consolidated Accounts Payable
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration risk, percentage	10.00%
Vendor Concentration Risk | Vendor | Consolidated Accounts Payable
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration risk, percentage			10.00%