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  <xs:element id="alc_LeaseLiabilitiesRecognisedAsOfAcquisitionDate" abstract="false" name="LeaseLiabilitiesRecognisedAsOfAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="alc_ProvisionsAndOtherCurrentLiabilitiesRecognisedAsOfAcquisitionDate" abstract="false" name="ProvisionsAndOtherCurrentLiabilitiesRecognisedAsOfAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="alc_IdentifiableAssetsAcquiredLiabilitiesAssumedAndGoodwill" abstract="false" name="IdentifiableAssetsAcquiredLiabilitiesAssumedAndGoodwill" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="alc_AcquisitionDateFairValueOfFinancialInvestmentHeldByAcquirerImmediatelyBeforeAcquisitionDate" abstract="false" name="AcquisitionDateFairValueOfFinancialInvestmentHeldByAcquirerImmediatelyBeforeAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="alc_AcquisitionDateFairValueOfIntangibleAssetsHeldByAcquirerImmediatelyBeforeAcquisitionDate" abstract="false" name="AcquisitionDateFairValueOfIntangibleAssetsHeldByAcquirerImmediatelyBeforeAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="alc_ConsiderationTransferredAndAcquisitionDateFairValueOfEquityInterest" abstract="false" name="ConsiderationTransferredAndAcquisitionDateFairValueOfEquityInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="alc_IncreaseDecreaseThroughBusinessCombinationsInvestmentsInAssociatesAccountedForUsingEquityMethod" abstract="false" name="IncreaseDecreaseThroughBusinessCombinationsInvestmentsInAssociatesAccountedForUsingEquityMethod" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
