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Organization and Description of Business and Accounting Policies - Additional Information (Details) | 12 Months Ended
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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% |

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