UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 8)*

                                    OCA, INC.
                                (Name of Issuer)

                          COMMON STOCK, $.01 PAR VALUE
                         (Title of Class of Securities)

                                   68750P 10 3
                                 (CUSIP Number)

                                DECEMBER 31, 2004
             (Date of Event which Requires filing of this Statement)

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

[ ] Rule 13d-1(b)
[X] 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 the
disclosures provided in a prior cover page.

The information required in 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. 68750P 10 3

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      1     NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)

                  THOMAS W. SMITH

--------------------------------------------------------------------------------
      2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP             (a) [ ]
                                                                         (b) [X]

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      3     SEC USE ONLY

--------------------------------------------------------------------------------
      4     CITIZEN OR PLACE OF ORGANIZATION

                  UNITED STATES

--------------------------------------------------------------------------------
                        5     SOLE VOTING POWER

                                    2,376,220
     NUMBER OF
      SHARES            --------------------------------------------------------
   BENEFICIALLY         6     SHARED VOTING POWER
   OWNED BY EACH
     REPORTING                      5,350,700
      PERSON
       WITH             --------------------------------------------------------
                        7     SOLE DISPOSITIVE POWER

                                    3,228,470

                        --------------------------------------------------------
                        8     SHARED DISPOSITIVE POWER

                                    5,350,700

--------------------------------------------------------------------------------
      9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  8,579,170

--------------------------------------------------------------------------------
      10    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

                  NOT APPLICABLE

--------------------------------------------------------------------------------
      11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                  17.1%

--------------------------------------------------------------------------------
      12    TYPE OF REPORTING PERSON

                  IN

--------------------------------------------------------------------------------

                                     - 2 -


CUSIP No. 68750P 10 3

--------------------------------------------------------------------------------
      1     NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)

                  SCOTT J. VASSALLUZZO

--------------------------------------------------------------------------------
      2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP             (a) [ ]
                                                                         (b) [x]

--------------------------------------------------------------------------------
      3     SEC USE ONLY

--------------------------------------------------------------------------------
      4     CITIZEN OR PLACE OF ORGANIZATION

                  UNITED STATES

--------------------------------------------------------------------------------
                        5     SOLE VOTING POWER

                                    17,000
     NUMBER OF
      SHARES            --------------------------------------------------------
   BENEFICIALLY         6     SHARED VOTING POWER
   OWNED BY EACH
     REPORTING                      5,150,700
      PERSON
       WITH             --------------------------------------------------------
                        7     SOLE DISPOSITIVE POWER

                                    99,000

                        --------------------------------------------------------
                        8     SHARED DISPOSITIVE POWER

                                    5,150,700

--------------------------------------------------------------------------------
      9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  5,249,700

--------------------------------------------------------------------------------
      10    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

                  NOT APPLICABLE

--------------------------------------------------------------------------------
      11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                  10.5%

--------------------------------------------------------------------------------
      12    TYPE OF REPORTING PERSON

                  IN

--------------------------------------------------------------------------------

                                     - 4 -


CUSIP No. 68750P 10 3

--------------------------------------------------------------------------------
      1     NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)

                  DANIEL J. ENGLANDER

--------------------------------------------------------------------------------
      2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP             (a) [ ]
                                                                         (b) [X]

--------------------------------------------------------------------------------
      3     SEC USE ONLY

--------------------------------------------------------------------------------
      4     CITIZEN OR PLACE OF ORGANIZATION

                  UNITED STATES

--------------------------------------------------------------------------------
                        5     SOLE VOTING POWER

                                    21,866
    NUMBER OF
     SHARES             --------------------------------------------------------
  BENEFICIALLY          6     SHARED VOTING POWER
  OWNED BY EACH
    REPORTING                       200,000
     PERSON
      WITH              --------------------------------------------------------
                        7     SOLE DISPOSITIVE POWER

                                    27,866

                        --------------------------------------------------------
                        8     SHARED DISPOSITIVE POWER

                                    200,000

--------------------------------------------------------------------------------
      9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  227,866

--------------------------------------------------------------------------------
      10    CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

                  NOT APPLICABLE

--------------------------------------------------------------------------------
      11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                  0.5%

--------------------------------------------------------------------------------
      12    TYPE OF REPORTING PERSON

                  IN

--------------------------------------------------------------------------------

                                     - 5 -

Explanatory Note: This Amendment No. 8 on Schedule 13G is being filed (i)
pursuant to Rule 13d-2(b) of the Securities Exchange Act of 1934, as amended, to
reflect changes in the information reported in the previous filing, and (ii) to
reflect the removal of Thomas N. Tryforos as a joint filer based on the fact
that, as of December 31, 2004, Mr. Tryforos no longer beneficially owns more
than five percent of the issuer's common stock.

ITEM 1. (a)    NAME OF ISSUER:

               OCA, Inc.

        (b)    ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

               3850 North Causeway Boulevard
               Suite 800
               Metairie, LA 70002

ITEM 2. (a)    NAME OF PERSON FILING:

               (i) Thomas W. Smith

               (ii) Scott J. Vassalluzzo

               (iii) Daniel J. Englander

               The filing of this Statement shall not be deemed to be an
               admission that the filing persons comprise a "group" within the
               meaning of Section 13(d)(3) of the Securities Exchange Act of
               1934, as amended. The Reporting Persons each disclaim beneficial
               ownership of the shares reported in this Schedule 13G in excess
               of those shares as to which they have or share voting or
               investment authority.

        (b)    ADDRESS OF PRINCIPAL BUSINESS OFFICE:

               The following is the address of the principal business office of
               each of the filing persons:

               323 Railroad Avenue
               Greenwich, CT 06830

        (c)    CITIZENSHIP:

               Each of Messrs. Thomas W. Smith, Scott J. Vassalluzzo and Daniel
               J. Englander is a United States citizen.

        (d)    TITLE OF CLASS OF SECURITIES:

               Common Stock, par value $.01 per share.

        (e)    CUSIP NUMBER:

                                     - 6 -


               68750P 10 3

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULES 13d-1(b) OR 13d-2(b) OR
        (c), CHECK WHETHER THE PERSON FILING IS A:

        Not applicable.

        IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(c), CHECK THIS BOX [X]

ITEM 4. OWNERSHIP

        (a)    Thomas W. Smith - 8,579,170 shares; Scott J. Vassalluzzo -
               5,249,700 shares; Daniel J. Englander - 227,866 shares

        (b)    Thomas W. Smith - 17.1%; Scott J. Vassalluzzo - 10.5%; Daniel J.
               Englander - 0.5%

        (c)    Messrs. Smith, Vassalluzzo and Englander have the sole power to
               vote or to direct the vote of 2,376,220, 17,000 and 21,866
               shares, respectively, and to dispose or to direct the disposition
               of 3,228,470, 99,000 and 27,866 shares, respectively. Messrs.
               Smith, Vassalluzzo and Englander share the power to vote or to
               direct the vote of and to dispose or to direct the disposition of
               5,350,700 5,150,700 and 200,000 shares, respectively. 

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

        As of December 31, 2004, Thomas N. Tryforos ceased to beneficially own
        more than five percent of the outstanding common stock of the Issuer.

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON

        Messrs. Smith, Tryforos, Vassalluzzo and Englander in the aggregate
        beneficially own 6,467,170 shares in their capacities as investment
        managers for certain managed accounts. The managed accounts have the
        right to receive dividends from, and the proceeds from the sale of, the
        managed accounts' shares. Voting and investment authority over
        investment accounts established for the benefit of certain family
        members and friends of the Reporting Persons is subject to each
        beneficiary's right, if so provided, to terminate or otherwise direct
        the disposition of the Managed Account.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
        SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY

        Not applicable.

                                     - 7 -


ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

        Not applicable.

ITEM 9. NOTICE OF DISSOLUTION OF GROUP

        Not applicable.

ITEM 10.CERTIFICATION

        By signing below, I certify that, to the best of my knowledge and
        belief, the securities referred to above 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.

                                     - 8 -


                                    SIGNATURE

      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.

Date: February 14, 2005

                                                    /s/ Thomas W. Smith
                                              ----------------------------------
                                                      Thomas W. Smith

                                                 /s/ Scott J. Vassalluzzo
                                              ----------------------------------
                                                   Scott J. Vassalluzzo

                                                  /s/ Daniel J. Englander
                                              ----------------------------------
                                                    Daniel J. Englander

                                     - 9 -


                             JOINT FILING AGREEMENT

      The undersigned agree that the foregoing Statement on Schedule 13G, dated
February 14, 2005, is being filed with the Securities and Exchange Commission
on behalf of each of the undersigned pursuant to Rule 13d-1(k)

Dated: February 14, 2005

                                                    /s/ Thomas W. Smith
                                              ----------------------------------
                                                      Thomas W. Smith

                                                 /s/ Scott J. Vassalluzzo
                                              ----------------------------------
                                                   Scott J. Vassalluzzo

                                                  /s/ Daniel J. Englander
                                              ----------------------------------
                                                    Daniel J. Englander

                                     - 10 -