Organization and Description of Business and Accounting Policies - Additional Information (Details)	3 Months Ended	12 Months Ended
	Apr. 03, 2026 USD ($)	Jan. 02, 2026 USD ($) Segment	Dec. 27, 2024 USD ($)	Dec. 29, 2023 USD ($)
Organization And Description Of Business And Accounting Policies [Line Items]
Number of reportable segment | Segment		1
Revenue, Remaining Performance Obligation, Amount		$ 0
Deferred Revenues		0	$ 0	$ 0
Goodwill		$ 1,786,000	1,786,000
Impairment of intangible assets				$ 154,000
Percentage of deduction in GILTI		50.00%
Cloud-based software		$ 31,118,000	15,763,000
Capitalized Computer Software, Amortization		409,000
ICLs shipped			27,500,000
Revenue recognized		0	$ 0
Recognized costs of severance and reduction in workforce		12,354,000
Consulting expenses		874,000
Impairment on real property right-of-use assets		4,894,000
Restructuring, impairment and related charges		$ 28,632,000
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]		srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description		The CODM assesses performance comparing actual results to forecasts and decides how to allocate resources, i.e., headcount and compensation, based on net income or on operating results, if a net loss.
Leasehold Improvements
Organization And Description Of Business And Accounting Policies [Line Items]
Recognized cost		$ 7,759,000
Broadwood Partners L.P. | Forecast
Organization And Description Of Business And Accounting Policies [Line Items]
Professional fees and expenses	$ 7,000,000
Alcon Research, LLC
Organization And Description Of Business And Accounting Policies [Line Items]
Professional fees and expenses		$ 17,135,000
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
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
Internally Developed Software
Organization And Description Of Business And Accounting Policies [Line Items]
Impairment of internally developed software		$ 2,751,000
Internally Developed Software | Minimum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life		5 years
Internally Developed Software | 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, aggregate of percentage		33.00%	58.00%
Customer Concentration Risk | Sales Revenue, Net | China [Member]
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration risk, aggregate of percentage		32.00%	51.00%	58.00%
Vendor Concentration Risk | One Vendor | Consolidated Accounts Payable
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration risk, aggregate of percentage			10.00%
Vendor Concentration Risk | Vendor | Consolidated Accounts Payable
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration risk, aggregate of percentage		30.00%