<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.3</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>225</ContextCount>
  <ElementCount>324</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>57</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>7</UnitCount>
  <MyReports>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>75000 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>75010 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_StatementCONDENSEDCONSOLIDATEDBALANCESHEETS</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>75020 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_StatementCONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>75030 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/StatementCondensedConsolidatedStatementsOfIncome</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>75040 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/StatementCondensedConsolidatedStatementsOfComprehensiveIncomeLoss</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>75050 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_StatementCONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>75060 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_StatementCONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995410 - Disclosure - Pay vs Performance Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/PvpDisclosure</Role>
      <ShortName>Pay vs Performance Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995455 - Disclosure - Basis of Presentation and Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureBasisOfPresentationAndSignificantAccountingPolicies</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995465 - Disclosure - Investments Available for Sale</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInvestmentsAvailableForSale</Role>
      <ShortName>Investments Available for Sale</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995475 - Disclosure - Inventories</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInventories</Role>
      <ShortName>Inventories</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995485 - Disclosure - Prepayments, Deposits, and Other Current Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePrepaymentsDepositsAndOtherCurrentAssets</Role>
      <ShortName>Prepayments, Deposits, and Other Current Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Property, Plant and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePropertyPlantAndEquipment</Role>
      <ShortName>Property, Plant and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995505 - Disclosure - Cloud-Based Software</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureCloudbasedSoftware</Role>
      <ShortName>Cloud-Based Software</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995515 - Disclosure - Other Current Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureOtherCurrentLiabilities</Role>
      <ShortName>Other Current Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995525 - Disclosure - Operating Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureOperatingLeases</Role>
      <ShortName>Operating Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995535 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureIncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995545 - Disclosure - Defined Benefit Pension Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDefinedBenefitPensionPlans</Role>
      <ShortName>Defined Benefit Pension Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995555 - Disclosure - Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureStockholdersEquity</Role>
      <ShortName>Stockholders' Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995565 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995575 - Disclosure - Basic and Diluted Net Income (Loss) Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureBasicAndDilutedNetIncomeLossPerShare</Role>
      <ShortName>Basic and Diluted Net Income (Loss) Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995585 - Disclosure - Disaggregation of Sales, Geographic Sales and Product Sales</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDisaggregationOfSalesGeographicSalesAndProductSales</Role>
      <ShortName>Disaggregation of Sales, Geographic Sales and Product Sales</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995595 - Disclosure - Geographic Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureGeographicAssets</Role>
      <ShortName>Geographic Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995605 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995625 - Disclosure - Basis of Presentation and Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureBasisOfPresentationAndSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995635 - Disclosure - Basis of Presentation and Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesTables</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995645 - Disclosure - Investments Available for Sale (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInvestmentsAvailableForSaleTables</Role>
      <ShortName>Investments Available for Sale (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInvestmentsAvailableForSale</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995655 - Disclosure - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInventoriesTables</Role>
      <ShortName>Inventories (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInventories</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995665 - Disclosure - Prepayments, Deposits, and Other Current Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePrepaymentsDepositsAndOtherCurrentAssetsTables</Role>
      <ShortName>Prepayments, Deposits, and Other Current Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePrepaymentsDepositsAndOtherCurrentAssets</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995675 - Disclosure - Property, Plant and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePropertyPlantAndEquipmentTables</Role>
      <ShortName>Property, Plant and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePropertyPlantAndEquipment</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995685 - Disclosure - Cloud-Based Software (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureCloudbasedSoftwareTables</Role>
      <ShortName>Cloud-Based Software (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/DisclosureCloudbasedSoftware</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995695 - Disclosure - Other Current Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureOtherCurrentLiabilitiesTables</Role>
      <ShortName>Other Current Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureOtherCurrentLiabilities</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995705 - Disclosure - Operating Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureOperatingLeasesTables</Role>
      <ShortName>Operating Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/DisclosureOperatingLeases</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995715 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureIncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureIncomeTaxes</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995725 - Disclosure - Defined Benefit Pension Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDefinedBenefitPensionPlansTables</Role>
      <ShortName>Defined Benefit Pension Plans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDefinedBenefitPensionPlans</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995735 - Disclosure - Stockholders' Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureStockholdersEquityTables</Role>
      <ShortName>Stockholders' Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureStockholdersEquity</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995745 - Disclosure - Basic and Diluted Net Income (Loss) Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureBasicAndDilutedNetIncomeLossPerShareTables</Role>
      <ShortName>Basic and Diluted Net Income (Loss) Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/DisclosureBasicAndDilutedNetIncomeLossPerShare</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995755 - Disclosure - Disaggregation of Sales, Geographic Sales and Product Sales (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDisaggregationOfSalesGeographicSalesAndProductSalesTables</Role>
      <ShortName>Disaggregation of Sales, Geographic Sales and Product Sales (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDisaggregationOfSalesGeographicSalesAndProductSales</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995765 - Disclosure - Geographic Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureGeographicAssetsTables</Role>
      <ShortName>Geographic Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/DisclosureGeographicAssets</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995775 - Disclosure - Basis of Presentation and Significant Accounting Policies - Schedule of Reclassifications (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesScheduleOfReclassificationsDetails</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies - Schedule of Reclassifications (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995785 - Disclosure - Basis of Presentation and Significant Accounting Policies - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureBasisOfPresentationAndSignificantAccountingPoliciesAdditionalInformationDetails</Role>
      <ShortName>Basis of Presentation and Significant Accounting Policies - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995795 - Disclosure - Investments Available for Sale - Summary of Investments Available for Sale and Related Fair Value Measurement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInvestmentsAvailableForSaleSummaryOfInvestmentsAvailableForSaleAndRelatedFairValueMeasurementDetails</Role>
      <ShortName>Investments Available for Sale - Summary of Investments Available for Sale and Related Fair Value Measurement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995805 - Disclosure - Investments Available for Sale - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInvestmentsAvailableForSaleAdditionalInformationDetails</Role>
      <ShortName>Investments Available for Sale - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995815 - Disclosure - Investments Available for Sale - Summary of Fair Value of Investments Available for Sale by Contractual Maturity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInvestmentsAvailableForSaleSummaryOfFairValueOfInvestmentsAvailableForSaleByContractualMaturityDetails</Role>
      <ShortName>Investments Available for Sale - Summary of Fair Value of Investments Available for Sale by Contractual Maturity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995825 - Disclosure - Inventories - Schedule of Inventory, Current (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureInventoriesScheduleOfInventoryCurrentDetails</Role>
      <ShortName>Inventories - Schedule of Inventory, Current (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995835 - Disclosure - Inventories - Schedule of Inventory, Current (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureInventoriesScheduleOfInventoryCurrentParentheticalDetails</Role>
      <ShortName>Inventories - Schedule of Inventory, Current (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995845 - Disclosure - Prepayments, Deposits, and Other Current Assets - Schedule Of Prepayments, Deposits, and Other Current Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePrepaymentsDepositsAndOtherCurrentAssetsScheduleOfPrepaymentsDepositsAndOtherCurrentAssetsDetails</Role>
      <ShortName>Prepayments, Deposits, and Other Current Assets - Schedule Of Prepayments, Deposits, and Other Current Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995855 - Disclosure - Prepayments, Deposits, and Other Current Assets - Schedule Of Prepayments, Deposits, and Other Current Assets (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePrepaymentsDepositsAndOtherCurrentAssetsScheduleOfPrepaymentsDepositsAndOtherCurrentAssetsParentheticalDetails</Role>
      <ShortName>Prepayments, Deposits, and Other Current Assets - Schedule Of Prepayments, Deposits, and Other Current Assets (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995865 - Disclosure - Property, Plant and Equipment - Property, Plant and Equipment, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosurePropertyPlantAndEquipmentPropertyPlantAndEquipmentNetDetails</Role>
      <ShortName>Property, Plant and Equipment - Property, Plant and Equipment, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995875 - Disclosure - Property, Plant and Equipment - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosurePropertyPlantAndEquipmentAdditionalInformationDetails</Role>
      <ShortName>Property, Plant and Equipment - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995885 - Disclosure - Property, Plant and Equipment - Schedule of Depreciation Expense and Loss on Disposal of Property, Plant and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosurePropertyPlantAndEquipmentScheduleOfDepreciationExpenseAndLossOnDisposalOfPropertyPlantAndEquipmentDetails</Role>
      <ShortName>Property, Plant and Equipment - Schedule of Depreciation Expense and Loss on Disposal of Property, Plant and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995895 - Disclosure - Cloud-Based Software - Schedule of Capitalized Cloud-based Software Costs, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureCloudbasedSoftwareScheduleOfCapitalizedCloudbasedSoftwareCostsNetDetails</Role>
      <ShortName>Cloud-Based Software - Schedule of Capitalized Cloud-based Software Costs, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995905 - Disclosure - Cloud-Based Software - Schedule of Activity Related to Cloud-based Software (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureCloudbasedSoftwareScheduleOfActivityRelatedToCloudbasedSoftwareDetails</Role>
      <ShortName>Cloud-Based Software - Schedule of Activity Related to Cloud-based Software (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995915 - Disclosure - Other Current Liabilities - Schedule of Other Current Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureOtherCurrentLiabilitiesScheduleOfOtherCurrentLiabilitiesDetails</Role>
      <ShortName>Other Current Liabilities - Schedule of Other Current Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>995925 - Disclosure - Other Current Liabilities - Schedule of Other Current Liabilities (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureOtherCurrentLiabilitiesScheduleOfOtherCurrentLiabilitiesParentheticalDetails</Role>
      <ShortName>Other Current Liabilities - Schedule of Other Current Liabilities (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>995935 - Disclosure - Operating Leases - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureOperatingLeasesAdditionalInformationDetails</Role>
      <ShortName>Operating Leases - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>995945 - Disclosure - Operating Leases - Supplemental Balance Sheet Information Related to Operating Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureOperatingLeasesSupplementalBalanceSheetInformationRelatedToOperatingLeasesDetails</Role>
      <ShortName>Operating Leases - Supplemental Balance Sheet Information Related to Operating Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>995955 - Disclosure - Operating Leases - Supplemental Cash Flow Information Related to Operating Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureOperatingLeasesSupplementalCashFlowInformationRelatedToOperatingLeasesDetails</Role>
      <ShortName>Operating Leases - Supplemental Cash Flow Information Related to Operating Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>995965 - Disclosure - Operating Leases - Schedule of Estimated Future Maturities of Lease Liabilities under Operating and Finance Leases Having Initial or Remaining Non-Cancelable Lease Terms More Than One Year (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureOperatingLeasesScheduleOfEstimatedFutureMaturitiesOfLeaseLiabilitiesUnderOperatingAndFinanceLeasesHavingInitialOrRemainingNoncan</Role>
      <ShortName>Operating Leases - Schedule of Estimated Future Maturities of Lease Liabilities under Operating and Finance Leases Having Initial or Remaining Non-Cancelable Lease Terms More Than One Year (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>995985 - Disclosure - Income Taxes - Schedule of Income Tax Provision (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfIncomeTaxProvisionDetails</Role>
      <ShortName>Income Taxes - Schedule of Income Tax Provision (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>995995 - Disclosure - Income Taxes - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetails</Role>
      <ShortName>Income Taxes - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>996005 - Disclosure - Defined Benefit Pension Plans - Schedule of Net Benefit Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDefinedBenefitPensionPlansScheduleOfNetBenefitCostsDetails</Role>
      <ShortName>Defined Benefit Pension Plans - Schedule of Net Benefit Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>996015 - Disclosure - Defined Benefit Pension Plans - Schedule of Defined Benefit Plans Disclosures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDefinedBenefitPensionPlansScheduleOfDefinedBenefitPlansDisclosuresDetails</Role>
      <ShortName>Defined Benefit Pension Plans - Schedule of Defined Benefit Plans Disclosures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>996025 - Disclosure - Stockholders' Equity - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureStockholdersEquityAdditionalInformationDetails</Role>
      <ShortName>Stockholders' Equity - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>996035 - Disclosure - Stockholders' Equity - Schedule of Compensation Cost (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureStockholdersEquityScheduleOfCompensationCostDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of Compensation Cost (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>996045 - Disclosure - Stockholders' Equity - Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureStockholdersEquityScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>996055 - Disclosure - Stockholders' Equity - Schedule of Unrecognized Compensation Cost Related to Non-Vested Stock-Based Compensation Arrangements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureStockholdersEquityScheduleOfUnrecognizedCompensationCostRelatedToNonvestedStockbasedCompensationArrangementsDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of Unrecognized Compensation Cost Related to Non-Vested Stock-Based Compensation Arrangements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>996065 - Disclosure - Stockholders' Equity - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureStockholdersEquityScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>996075 - Disclosure - Stockholders' Equity - Schedule of Share-based Compensation, Stock Options, Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureStockholdersEquityScheduleOfShareBasedCompensationStockOptionsActivityDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of Share-based Compensation, Stock Options, Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>996085 - Disclosure - Stockholders' Equity - Schedule of Share-based Compensation, Restricted Stock, RSU and PSU Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureStockholdersEquityScheduleOfSharebasedCompensationRestrictedStockRsuAndPsuActivityDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of Share-based Compensation, Restricted Stock, RSU and PSU Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>996095 - Disclosure - Stockholders' Equity - Schedule of Common Share Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureStockholdersEquityScheduleOfCommonShareActivityDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of Common Share Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>996115 - Disclosure - Basic and Diluted Net Income (Loss) Per Share - Summary of Computation of Basic and Diluted Net Income (Loss) Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureBasicAndDilutedNetIncomeLossPerShareSummaryOfComputationOfBasicAndDilutedNetIncomeLossPerShareDetails</Role>
      <ShortName>Basic and Diluted Net Income (Loss) Per Share - Summary of Computation of Basic and Diluted Net Income (Loss) Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/DisclosureBasicAndDilutedNetIncomeLossPerShareTables</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>996125 - Disclosure - Basic and Diluted Net Income (Loss) Per Share - Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureBasicAndDilutedNetIncomeLossPerShareScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareDetails</Role>
      <ShortName>Basic and Diluted Net Income (Loss) Per Share - Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.staar.com/20250926/taxonomy/role/DisclosureBasicAndDilutedNetIncomeLossPerShareTables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>996135 - Disclosure - Disaggregation of Sales, Geographic Sales and Product Sales - Disaggregation of Sales (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDisaggregationOfSalesGeographicSalesAndProductSalesDisaggregationOfSalesDetails</Role>
      <ShortName>Disaggregation of Sales, Geographic Sales and Product Sales - Disaggregation of Sales (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>996145 - Disclosure - Disaggregation of Sales, Geographic Sales and Product Sales - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDisaggregationOfSalesGeographicSalesAndProductSalesAdditionalInformationDetails</Role>
      <ShortName>Disaggregation of Sales, Geographic Sales and Product Sales - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>996155 - Disclosure - Disaggregation of Sales, Geographic Sales and Product Sales - Net Sales by Geographic Areas (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/Role_DisclosureDisaggregationOfSalesGeographicSalesAndProductSalesNetSalesByGeographicAreasDetails</Role>
      <ShortName>Disaggregation of Sales, Geographic Sales and Product Sales - Net Sales by Geographic Areas (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>996165 - Disclosure - Geographic Assets - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureGeographicAssetsAdditionalInformationDetails</Role>
      <ShortName>Geographic Assets - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>996175 - Disclosure - Geographic Assets - Composition of Long-Lived Asset (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureGeographicAssetsCompositionOfLonglivedAssetDetails</Role>
      <ShortName>Geographic Assets - Composition of Long-Lived Asset (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="staa-20250926.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>996185 - Disclosure - Geographic Assets - Composition of Long-Lived Asset (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.staar.com/20250926/taxonomy/role/DisclosureGeographicAssetsCompositionOfLonglivedAssetParentheticalDetails</Role>
      <ShortName>Geographic Assets - Composition of Long-Lived Asset (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="staa-20250926.htm">staa-20250926.htm</File>
    <File>staa-20250926.xsd</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="2">http://fasb.org/srt/2025</BaseTaxonomy>
    <BaseTaxonomy items="861">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
