<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>83</ContextCount>
  <ElementCount>179</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>30</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00000002 - Statement - Condensed Consolidated Balance Sheets (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/BalanceSheets</Role>
      <ShortName>Condensed Consolidated Balance Sheets (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00000003 - Statement - Condensed Consolidated Balance Sheets (unaudited) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/BalanceSheetsParenthetical</Role>
      <ShortName>Condensed Consolidated Balance Sheets (unaudited) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00000004 - Statement - Condensed Consolidated Statements of Operations (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/StatementsOfOperations</Role>
      <ShortName>Condensed Consolidated Statements of Operations (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00000005 - Statement - Condensed Consolidated Statements of Comprehensive Loss (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/StatementsOfComprehensiveLoss</Role>
      <ShortName>Condensed Consolidated Statements of Comprehensive Loss (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00000006 - Statement - Condensed Consolidated Statements of Stockholders' Equity (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/StatementsOfStockholdersEquity</Role>
      <ShortName>Condensed Consolidated Statements of Stockholders' Equity (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00000007 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/StatementsOfCashFlows</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>00000008 - Disclosure - Organization and Business Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/OrganizationAndBusinessOperations</Role>
      <ShortName>Organization and Business Operations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>00000009 - Disclosure - Basis of Presentation, Significant Accounting Policies and Recent Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/BasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncements</Role>
      <ShortName>Basis of Presentation, Significant Accounting Policies and Recent Accounting Pronouncements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>00000010 - Disclosure - Concentration of Risk</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/ConcentrationOfRisk</Role>
      <ShortName>Concentration of Risk</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>00000011 - Disclosure - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/FairValueMeasurements</Role>
      <ShortName>Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>00000012 - Disclosure - Selected Balance Sheet Detail</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/SelectedBalanceSheetDetail</Role>
      <ShortName>Selected Balance Sheet Detail</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>00000013 - Disclosure - Equity Securities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/EquitySecurities</Role>
      <ShortName>Equity Securities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>00000014 - Disclosure - Warrants</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/Warrants</Role>
      <ShortName>Warrants</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>00000015 - Disclosure - Stock-Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/Stock-basedCompensation</Role>
      <ShortName>Stock-Based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>00000016 - Disclosure - Risk and Uncertainties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/RiskAndUncertainties</Role>
      <ShortName>Risk and Uncertainties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>00000017 - Disclosure - Litigation, Claims and Assessments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/LitigationClaimsAndAssessments</Role>
      <ShortName>Litigation, Claims and Assessments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>00000018 - Disclosure - Basis of Presentation, Significant Accounting Policies and Recent Accounting Pronouncements (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/BasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsPolicies</Role>
      <ShortName>Basis of Presentation, Significant Accounting Policies and Recent Accounting Pronouncements (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://secondsight.com/role/BasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncements</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>00000019 - Disclosure - Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/FairValueMeasurementsTables</Role>
      <ShortName>Fair Value Measurements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://secondsight.com/role/FairValueMeasurements</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>00000020 - Disclosure - Selected Balance Sheet Detail (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/SelectedBalanceSheetDetailTables</Role>
      <ShortName>Selected Balance Sheet Detail (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://secondsight.com/role/SelectedBalanceSheetDetail</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>00000021 - Disclosure - Equity Securities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/EquitySecuritiesTables</Role>
      <ShortName>Equity Securities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://secondsight.com/role/EquitySecurities</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>00000022 - Disclosure - Warrants (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/WarrantsTables</Role>
      <ShortName>Warrants (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://secondsight.com/role/Warrants</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>00000023 - Disclosure - Stock-Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/Stock-basedCompensationTables</Role>
      <ShortName>Stock-Based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://secondsight.com/role/Stock-basedCompensation</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>00000024 - Disclosure - Organization and Business Operations (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/OrganizationAndBusinessOperationsDetailsNarrative</Role>
      <ShortName>Organization and Business Operations (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://secondsight.com/role/OrganizationAndBusinessOperations</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>00000025 - Disclosure - Concentration of Risk (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/ConcentrationOfRiskDetailsNarrative</Role>
      <ShortName>Concentration of Risk (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://secondsight.com/role/ConcentrationOfRisk</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>00000026 - Disclosure - Assets measured at fair value on a recurring basis are as follows (in thousands): (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/AssetsMeasuredAtFairValueOnRecurringBasisAreAsFollowsInThousandsDetails</Role>
      <ShortName>Assets measured at fair value on a recurring basis are as follows (in thousands): (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>00000027 - Disclosure - Property and equipment consisted of the following (in thousands): (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/PropertyAndEquipmentConsistedOfFollowingInThousandsDetails</Role>
      <ShortName>Property and equipment consisted of the following (in thousands): (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>00000028 - Disclosure - Contract liabilities which are included in accrued expenses consisted of the following (in thousands): (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/ContractLiabilitiesWhichAreIncludedInAccruedExpensesConsistedOfFollowingInThousandsDetails</Role>
      <ShortName>Contract liabilities which are included in accrued expenses consisted of the following (in thousands): (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>00000029 - Disclosure - A summary of activity of our warranty liabilities, which are included in accrued expenses, for the period ended March 31, 2022 is presented below (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/SummaryOfActivityOfOurWarrantyLiabilitiesWhichAreIncludedInAccruedExpensesForPeriodEndedMarch312022IsPresentedBelowDetails</Role>
      <ShortName>A summary of activity of our warranty liabilities, which are included in accrued expenses, for the period ended March 31, 2022 is presented below (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>00000030 - Disclosure - Schedule of right of use assets and operating lease liabilties (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/ScheduleOfRightOfUseAssetsAndOperatingLeaseLiabiltiesDetails</Role>
      <ShortName>Schedule of right of use assets and operating lease liabilties (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>00000031 - Disclosure - The components of lease expense for the three months ended March 31, 2022 and 2021 were as follows (unaudited): (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/ComponentsOfLeaseExpenseForThreeMonthsEndedMarch312022And2021WereAsFollowsUnauditedDetails</Role>
      <ShortName>The components of lease expense for the three months ended March 31, 2022 and 2021 were as follows (unaudited): (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>00000032 - Disclosure - Selected Balance Sheet Detail (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/SelectedBalanceSheetDetailDetailsNarrative</Role>
      <ShortName>Selected Balance Sheet Detail (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://secondsight.com/role/SelectedBalanceSheetDetailTables</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>00000033 - Disclosure - As of March 31, 2022 and 2021, we excluded the potentially dilutive securities summarized below, which entitle the holders thereof to potentially acquire shares of common stock, from our calculations of net loss per share and weighted average common share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/AsOfMarch312022And2021WeExcludedPotentiallyDilutiveSecuritiesSummarizedBelowWhichEntitleHoldersThereofToPotentiallyAcquireSharesOfCommonStockFromOurCalculationsOfNetLossPerShareAndWeightedAverageCommonShareDetails</Role>
      <ShortName>As of March 31, 2022 and 2021, we excluded the potentially dilutive securities summarized below, which entitle the holders thereof to potentially acquire shares of common stock, from our calculations of net loss per share and weighted average common share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>00000034 - Disclosure - A summary of warrants activity for the three months ended March 31, 2022 is presented below (in thousands, except per share and contractual life data). (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/SummaryOfWarrantsActivityForThreeMonthsEndedMarch312022IsPresentedBelowInThousandsExceptPerShareAndContractualLifeData.Details</Role>
      <ShortName>A summary of warrants activity for the three months ended March 31, 2022 is presented below (in thousands, except per share and contractual life data). (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>00000035 - Disclosure - Warrants (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/WarrantsDetailsNarrative</Role>
      <ShortName>Warrants (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://secondsight.com/role/WarrantsTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>00000036 - Disclosure - A summary of stock option activity under our 2011 Equity Incentive Plan (???2011 Plan???) for the three months ended March 31, 2022 is presented below (in thousands, except per share and contractual life data). (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/SummaryOfStockOptionActivityUnderOur2011EquityIncentivePlan2011PlanForThreeMonthsEndedMarch312022IsPresentedBelowInThousandsExceptPerShareAndContractualLifeData.Details</Role>
      <ShortName>A summary of stock option activity under our 2011 Equity Incentive Plan (???2011 Plan???) for the three months ended March 31, 2022 is presented below (in thousands, except per share and contractual life data). (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>00000037 - Disclosure - Stock-based compensation expense recognized for stock-based awards in the condensed consolidated statements of operations for the three months ended March 31, 2022 and 2021 was as follows (in thousands): (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/Stock-basedCompensationExpenseRecognizedForStock-basedAwardsInCondensedConsolidatedStatementsOfOperationsForThreeMonthsEndedMarch312022And2021WasAsFollowsInThousandsDetails</Role>
      <ShortName>Stock-based compensation expense recognized for stock-based awards in the condensed consolidated statements of operations for the three months ended March 31, 2022 and 2021 was as follows (in thousands): (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>00000038 - Disclosure - Stock-Based Compensation (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/Stock-basedCompensationDetailsNarrative</Role>
      <ShortName>Stock-Based Compensation (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://secondsight.com/role/Stock-basedCompensationTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="g083004_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>00000039 - Disclosure - Litigation, Claims and Assessments (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://secondsight.com/role/LitigationClaimsAndAssessmentsDetailsNarrative</Role>
      <ShortName>Litigation, Claims and Assessments (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://secondsight.com/role/LitigationClaimsAndAssessments</ParentRole>
      <Position>39</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" original="g083004_10q.htm">g083004_10q.htm</File>
    <File>eyes-20220331.xsd</File>
    <File>eyes-20220331_cal.xml</File>
    <File>eyes-20220331_def.xml</File>
    <File>eyes-20220331_lab.xml</File>
    <File>eyes-20220331_pre.xml</File>
    <File>g083004_ex31-1.htm</File>
    <File>g083004_ex31-2.htm</File>
    <File>g083004_ex32-1.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="294">http://fasb.org/us-gaap/2022</BaseTaxonomy>
    <BaseTaxonomy items="32">http://xbrl.sec.gov/dei/2022</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
