IRIDEX Schedule 13G as filed July 10, 2007
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934



                               IRIDEX Corporation
                                (Name of Issuer)

                          Common Stock, $.01 Par Value
                         (Title of Class of Securities)

                                    462684101
                                 (CUSIP Number)


                                  June 30, 2007
             (Date of Event Which Required Filing of this Statement)


Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

         [X] Rule 13d-1(b)

         [ ] Rule 13d-1(c)

         [ ] Rule 13d-1(d)

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).





CUSIP No. - 462684101

1    NAME OF REPORTING PERSON:

                                Nationwide SA Capital Trust

     I.R.S. IDENTIFICATION NO. OF ABOVE PERSON:

                                52-6969856

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

         (a)      /_/
         (b)      /_/

3    SEC USE ONLY

4    CITIZENSHIP OR PLACE OF ORGANIZATION:

                                Delaware


NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5    SOLE VOTING POWER          0


6    SHARED VOTING POWER        111,419


7    SOLE DISPOSITIVE POWER     0


8    SHARED DISPOSITIVE POWER   111,419


9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                111,419

10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES /_/

11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                                1.36%

12   TYPE OF REPORTING PERSON

                                IA





CUSIP No. - 462684101

1    NAME OF REPORTING PERSON:

                                Nationwide Fund Advisors

     I.R.S. IDENTIFICATION NO. OF ABOVE PERSON:

                                52-6969857

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

         (a)      /_/
         (b)      /_/

3    SEC USE ONLY

4    CITIZENSHIP OR PLACE OF ORGANIZATION:

                                Delaware


NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5    SOLE VOTING POWER          0


6    SHARED VOTING POWER        817,907


7    SOLE DISPOSITIVE POWER     0


8    SHARED DISPOSITIVE POWER   817,907


9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                817,907

10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES /_/

11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                                9.96%

12   TYPE OF REPORTING PERSON

                                IA





Item 1.

     (a)  Name of Issuer: IRIDEX Corporation.

     (b)  Address of  Issuer's  Principal  Executive  Office:  1212 Terra  Bella
          Avenue, Mountain View, CA 94043-1824.

Item 2.

     (a)  Name of Person  Filing:  Nationwide  SA Capital  Trust  ("NSACT")  and
          Nationwide Fund Advisors ("NFA")

     (b)  Address of Principal Business Office or, if none, Residence:

     NSACT:            5 Tower Bridge
                       300 Barr Harbor, Suite 300
                       Conshohocken, PA  19428

     NFA:              1200 River Road
                       Suite 1000
                       Conshohocken, PA  19428

     (c)  Citizenship: Delaware

     (d)  Title of the Class of Securities: Common Stock, $.01 par value

     (e)  CUSIP number: 462684101


Item 3. If this statement is filed pursuant to Rule 13d-1(b) or 13d-2(b) or (c),
check whether the person filing is a:

     (a)  [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C.
          78o).

     (b)  [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

     (c)  [ ]  Insurance  company as defined in section  3(a)(19) of the Act (15
          U.S.C. 78c).

     (d)  [ ] Investment  company  registered  under section 8 of the Investment
          Company Act of 1940 (15 U.S.C. 80a-8).

     (e)  [X]   An   investment   adviser   in   accordance   with   §240.13d-
          1(b)(1)(ii)(E);

     (f)  [  ]  An  employee  benefit  plan  or  endowment  fund  in  accordance
          with §240.13d-1(b)(1)(ii)(F);

     (g)  [  ]  A  parent  holding  company  or  control  person  in  accordance
          with §240.13d-1(b)(1)(ii)(G);

     (h)  [ ] A savings  association  as defined in Section  3(b) of the Federal
          Deposit Insurance Act (12 U.S.C. 1813);

     (i)  [ ] A  church  plan  that  is  excluded  from  the  definition  of  an
          investment  company under section  3(c)(14) of the Investment  Company
          Act of 1940 (15 U.S.C. 80a-3);

     (j)  [ ] Group, in accordance with §240.13d-1(b)(1)(ii)(J).


Item 4.  Ownership

     In accordance with Securities and Exchange  Commission Release No. 34-39538
(Jan. 12, 1998),  this statement on Schedule 13G is being filed by NSACT and NFA
as a  separate  business  unit or  division  of their  ultimate  parent  entity,
Nationwide  Mutual  Insurance  Company.  NSACT  and NFA,  acting  as a  separate
business unit or division for purposes of Regulation 13D-G,  exercise voting and
investment  powers  independently  from other  business  units or  divisions  of
Nationwide Mutual Insurance Company.

     The securities  reported herein are beneficially  owned by one or more open
or closed-end  investment  companies or other managed accounts which are advised
by NSACT  and  NFA,  each of which is a  registered  investment  adviser.  NSACT
disclosures   include   securities   advised  by  its  indirect   majority-owned
subsidiary,  NorthPointe Capital, LLC ("NorthPointe"),  a registered  investment
adviser.  Consistent with Rule 13d-4 under the Securities  Exchange Act of 1934,
this  Schedule 13G shall not be construed as an admission  that NSACT or NFA, or
any other person,  is the  beneficial  owner of any  securities  covered by this
statement.

               a.   Amount beneficially owned:                           929,326

               b.   Percent of class                                      11.32%

               c.   Number of shares as to which such person has:

          i.   Sole power to vote or to direct the vote:                       0

          ii.  Shared power to vote or to direct the vote:               929,326

          iii. Sole power to dispose or to direct the disposition of:          0

          iv.  Shared power to dispose or to direct the disposition of:  929,326

Item 5. Ownership of Five Percent or Less of a Class

         N/A

Item 6. Ownership of More than Five Percent on Behalf of Another Person.

     The clients of NSACT and NFA,  including  investment  companies  registered
under the Investment  Company Act of 1940 and other managed  accounts,  have the
right to receive  dividends  from as well as the proceeds  from the sale of such
securities reported on in this statement.  As of June 30, 2007, Nationwide Small
Cap Fund, a series of Nationwide Mutual Funds, owned 817,907 shares, or 9.96%.

Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
Security Being Reported on By the Parent Holding Company

         N/A

Item 8. Identification and Classification of Members of the Group

         N/A

Item 9. Notice of Dissolution of Group

         N/A

Item 10. Certification

     By signing  below I certify  that,  to the best of my knowledge and belief,
the  securities  referred to above were  acquired  and are held in the  ordinary
course of business  and were not acquired and are not held for the purpose of or
with the effect of  changing  or  influencing  the  control of the issuer of the
securities  and were not  acquired and are not held in  connection  with or as a
participant in any transaction having that purpose or effect.





SIGNATURES

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.



                                       NATIONWIDE SA CAPITAL TRUST



                                    By:/s/Gerald J. Holland
                                       Name:    Gerald J. Holland
                                       Title:   Senior Vice President
                                       Date:    July 10, 2007





                                       NATIONWIDE FUND ADVISORS



                                    By:/s/Gerald J. Holland
                                       Name:    Gerald J. Holland
                                       Title:   Senior Vice President
                                       Date:    July 10, 2007




Exhibit 1


                             JOINT FILING AGREEMENT

     In accordance with Rule  13d-1(k)(1)  under the Securities Act of 1934, the
undersigned  hereby  agree to the joint  filing with each other of the  attached
statement on Schedule 13G and to all  amendments to such statement and that such
statement  and all  amendments  to such  statement  is made on behalf of each of
them.

     IN WITNESS WHEREOF,  the undersigned  hereby execute this Agreement on July
10, 2007.




                                       NATIONWIDE SA CAPITAL TRUST



                                    By:/s/Gerald J. Holland
                                       Name:    Gerald J. Holland
                                       Title:   Senior Vice President





                                       NATIONWIDE FUND ADVISORS



                                    By:/s/Gerald J. Holland
                                       Name:    Gerald J. Holland
                                       Title:   Senior Vice President