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Disaggregation of Sales, Geographic Sales and Product Sales - Additional Information (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 27, 2024 Country | Sep. 29, 2023 | Sep. 27, 2024 Country Segment | Sep. 29, 2023 | Dec. 29, 2023
Geographic and Product Data [Line Items] |  |  |  |  |
Number of countries in which Company operates | Country | 75 |  | 75 |  |
Number of operating segments | Segment |  |  | 1 |  |
Sales Revenue, Net | Geographic Concentration Risk [Member] | Other than China and Japan [Member] | Maximum |  |  |  |  |
Geographic and Product Data [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 10.00% |  |
Sales Revenue, Net | Geographic Concentration Risk [Member] | China [Member] |  |  |  |  |
Geographic and Product Data [Line Items] |  |  |  |  |
Concentration risk, percentage | 59.00% | 60.00% | 58.00% | 59.00% |
Sales Revenue, Net | Product Concentration Risk [Member] | Ophthalmic Surgical Product [Member] |  |  |  |  |
Geographic and Product Data [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 100.00% |  |
Accounts Receivable [Member] | Geographic Concentration Risk [Member] | China [Member] |  |  |  |  |
Geographic and Product Data [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 69.00% |  | 70.00%

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-18 + Details
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