-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 KrwLl8laVtbjIBagd9RtnDqsVyqhtBqv/BT3QmISJJfwK0Pd45C1QTMDeQKfl9ef
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<SEC-DOCUMENT>0001140361-10-039153.txt : 20100930
<SEC-HEADER>0001140361-10-039153.hdr.sgml : 20100930
<ACCEPTANCE-DATETIME>20100930172648
ACCESSION NUMBER:		0001140361-10-039153
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100928
FILED AS OF DATE:		20100930
DATE AS OF CHANGE:		20100930

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IRIDEX CORP
		CENTRAL INDEX KEY:			0001006045
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		IRS NUMBER:				770210467
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1230

	BUSINESS ADDRESS:	
		STREET 1:		1212 TERRA BELLA AVE
		CITY:			MOUNTAIN VIEW
		STATE:			CA
		ZIP:			94043
		BUSINESS PHONE:		6509404700

	MAIL ADDRESS:	
		STREET 1:		1212 TERRA BELLA AVENUE
		CITY:			MOUNTAIN VIEW
		STATE:			CA
		ZIP:			94043

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BlueLine Partners, L.L.C.
		CENTRAL INDEX KEY:			0001311443
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27598
		FILM NUMBER:		101100032

	BUSINESS ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526
		BUSINESS PHONE:		925-648-2085

	MAIL ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BlueLine Capital Partners, L.P.
		CENTRAL INDEX KEY:			0001338149
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27598
		FILM NUMBER:		101100035

	BUSINESS ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526
		BUSINESS PHONE:		925-648-2085

	MAIL ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BlueLine Capital Partners III, LP
		CENTRAL INDEX KEY:			0001411986
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27598
		FILM NUMBER:		101100033

	BUSINESS ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526
		BUSINESS PHONE:		(925) 988-0285

	MAIL ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BlueLine Partners II, LLC
		CENTRAL INDEX KEY:			0001411987
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27598
		FILM NUMBER:		101100034

	BUSINESS ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526
		BUSINESS PHONE:		(925) 988-0285

	MAIL ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BlueLine Catalyst Fund IX, L.P.
		CENTRAL INDEX KEY:			0001460518
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27598
		FILM NUMBER:		101100036

	BUSINESS ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526
		BUSINESS PHONE:		925-236-9790

	MAIL ADDRESS:	
		STREET 1:		402 RAILROAD AVENUE
		STREET 2:		SUITE 201
		CITY:			DANVILLE
		STATE:			CA
		ZIP:			94526
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-09-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001006045</issuerCik>
        <issuerName>IRIDEX CORP</issuerName>
        <issuerTradingSymbol>IRIX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001460518</rptOwnerCik>
            <rptOwnerName>BlueLine Catalyst Fund IX, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>319 DIABLO ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>DANVILLE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94526</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001338149</rptOwnerCik>
            <rptOwnerName>BlueLine Capital Partners, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>319 DIABLO ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>STE 200</rptOwnerStreet2>
            <rptOwnerCity>DANVILLE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94526</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001411987</rptOwnerCik>
            <rptOwnerName>BlueLine Partners II, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>319 DIABLO ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>STE 200</rptOwnerStreet2>
            <rptOwnerCity>DANVILLE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94526</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001411986</rptOwnerCik>
            <rptOwnerName>BlueLine Capital Partners III, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>319 DIABLO ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>STE 200</rptOwnerStreet2>
            <rptOwnerCity>DANVILLE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94526</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001311443</rptOwnerCik>
            <rptOwnerName>BlueLine Partners, L.L.C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>319 DIABLO ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>STE 200</rptOwnerStreet2>
            <rptOwnerCity>DANVILLE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94526</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2010-09-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7093</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.12</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2515193</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2010-09-30</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>15101</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.31</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2530294</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">As described in Amendment No. 4 to Schedule 13D (&quot;Amendment No. 4&quot;) filed on October 25, 2007 with respect to the securities owned by BlueLine Capital Partners, L.P., BlueLine Capital Partners II, L.P., BlueLine Capital Partners III, L.P., BlueLine Catalyst Fund VIII, L.P., BlueLine Catalyst Fund IX, L.P., BlueLine Partners, L.L.C., and BlueLine Partners II, L.L.C., as of the date of Amendment No. 4, the Reporting Entities may have been deemed to be a &quot;group&quot; under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Entity may have been deemed to have beneficial ownership of 10% or more of the securities.

The filing of this statement shall not be deemed an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any Reporting Person is the beneficial owner of any Common Stock covered by this statement.</footnote>
    </footnotes>

    <remarks>Scott A. Shuda, by power of attorney for all reporting persons</remarks>

    <ownerSignature>
        <signatureName>Scott A. Shuda</signatureName>
        <signatureDate>2010-09-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----