=============================================================================
                                UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549
                                 SCHEDULE 13D
                Under the Securities and Exchange Act of 1934

                             (Amendment No. 4)


                        Advanced Medical Optics, Inc.
               ------------------------------------------------
                               (Name of Issuer)

                    Common Stock, $0.01 par value per share
                ------------------------------------------------
                        (Title of Class of Securities)

                                  00763M108
                ------------------------------------------------
                               (CUSIP Number)

                           Allison Bennington, Esq.
                              ValueAct Capital
                       435 Pacific Avenue, Fourth Floor
                          San Francisco, CA  94133
                               (415) 362-3700
                ------------------------------------------------
                 (Name, address and telephone number of Person
                Authorized to Receive Notices and Communications)

                         Christopher G. Karras, Esq.
                                 Dechert LLP
                                  Cira Centre
                                2929 Arch Street
                          Philadelphia, PA 19104-2808
                                (215) 994-4000

                               January 11, 2009
                ------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the
following box [ ].

Note:  Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 240.13d-7 for other
parties to whom copies are to be sent.

*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.

This 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).
=============================================================================


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 00763M108                                              Page 2 of 17
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Master Fund, L.P.
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS (See Instructions)*

   WC*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   British Virgin Islands
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         8,168,832**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        8,168,832**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    8,168,832**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

   13.3%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 00763M108                                              Page 3 of 17
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Master Fund III, L.P.
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS (See Instructions)*

   WC*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   British Virgin Islands
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         642,803**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        642,803**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    642,803**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

   1.0%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5



                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 00763M108                                              Page 4 of 17
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   VA Partners I, LLC
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         8,168,832**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        8,168,832**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    8,168,832**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    13.3%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 00763M108                                              Page 5 of 17
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   VA Partners III, LLC
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         642,803**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        642,803**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    642,803**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    1.0%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 00763M108                                              Page 6 of 17
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Management, L.P.
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         8,811,635**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        8,811,635**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    8,811,635**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    14.3%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 00763M108                                              Page 7 of 17
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Management, LLC
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         8,811,635**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        8,811,635**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    8,811,635**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    14.3%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 55269P302                                             Page 8 of 17
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Holdings, L.P.
---------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

---------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY         8,811,635**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        8,811,635**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    8,811,635**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    14.3%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Items 2 and 5


                                SCHEDULE 13D
--------------------------                          -------------------------
CUSIP NO. 55269P302                                             Page 9 of 17
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Holdings GP, LLC
---------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                        [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                   7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES          8.  SHARED VOTING POWER
   BENEFICIALLY        8,811,635**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH     9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                        8,811,635**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    8,811,635**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    14.3%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Items 2 and 5





--------------------------                          -------------------------
CUSIP NO. 00763M108                                             Page 10 of 17
-----------------------------------------------------------------------------
THE PURPOSE OF THIS AMENDMENT NO. 4 TO SCHEDULE 13D IS TO AMEND THE
OWNERSHIP REPORTS OF THE REPORTING PERSONS AND TO AMEND THE PURPOSE
OF TRANSACTION SECTION.  THE INFORMATION BELOW SUPPLEMENTS THE INFORMATION
PREVIOUSLY PROVIDED.

Item 1.     Security and Issuer

       This Schedule 13D relates to the Common Stock, par value $0.01 per
share (the "Common Stock"), of Advanced Medical Optics, Inc., a Delaware
corporation (the "Issuer").  The address of the principal executive offices
of the Issuer is 1700 E. St. Andrew Place, Santa Ana, California 92705.

Item 2.     Identity and Background

      This statement is filed jointly by (a) ValueAct Capital Master Fund,
L.P. ("ValueAct Master Fund"), (b) ValueAct Capital Master Fund III, L.P.
("ValueAct Master Fund III"), (c) VA Partners I, LLC ("VA Partners I"), (d)
VA Partners III, LLC ("VA Partners III"), (e) ValueAct Capital Management,
L.P. ("ValueAct Management L.P."), (f) ValueAct Capital Management, LLC
("ValueAct Management LLC"), (g) ValueAct Holdings, L.P. ("ValueAct
Holdings") and (h) ValueAct Holdings GP, LLC ("ValueAct Holdings GP")
(collectively, the "Reporting Persons").

       ValueAct Master Fund and ValueAct Master Fund III are limited
partnerships organized under the laws of the British Virgin Islands.  Each
has a principal business address of 435 Pacific Avenue, Fourth Floor, San
Francisco, CA 94133.

        VA Partners I is a Delaware limited liability company, the principal
business of which is to serve as the General Partner to ValueAct Master Fund.
VA Partners III is a Delaware limited partnership, the principal business of
which is to serve as the General Partner to ValueAct Master Fund III.  Each
has a principal business address of 435 Pacific Avenue, Fourth Floor, San
Francisco, CA 94133.

        ValueAct Management L.P. is a Delaware limited partnership which
renders management services to ValueAct Master Fund and ValueAct Master Fund
III.  ValueAct Management LLC is a Delaware limited liability company, the
principal business of which is to serve as the General Partner to ValueAct
Management L.P.  Each has a principal business address of 435 Pacific Avenue,
Fourth Floor, San Francisco, CA 94133.

       ValueAct Holdings is a Delaware limited partnership and is the sole
owner of  the limited partnership interests of ValueAct Management L.P. and
the membership interests of ValueAct Management LLC and is the majority owner
of the membership interests of VA Partners I and VA Partners III.  ValueAct
Holdings GP is a Delaware limited liability company, the principal business
of which is to serve as the General Partner to ValueAct Holdings.  Each has a
principal business address of 435 Pacific Avenue, Fourth Floor, San
Francisco, CA 94133.

       (d) and (e). None of the entities or persons identified in this Item 2
has during the past five years been convicted of any criminal proceeding
(excluding traffic violations or similar misdemeanors), nor been a party to a
civil proceeding of a judicial or administrative body of competent judgment,
decree or final order enjoining future violations of, or prohibiting or

--------------------------                          -------------------------
CUSIP NO. 00763M108                                            Page 11 of 17
-----------------------------------------------------------------------------
mandating activities subject to, federal or state securities laws or finding
any violation with respect to such laws.

Item 3.     Source and Amount of Funds or Other Consideration

           The source of funds used for the purchase of the Issuer's
securities was the working capital of ValueAct Master Fund. The funds used by
these Reporting Persons to make the purchase reported in Item 5(c) below were
$1,795,300.00.

Item 4.     Purpose of Transaction

Item 4 to Schedule 13D is amended, in pertinent part as follows:

     On January 11, 2009, ValueAct Master Fund, ValueAct Master Fund III,
Abbott Laboratories, an Illinois corporation ("Abbott"), and Rainforest
Acquisition Inc., a Delaware corporation and wholly owned Subsidiary of
Abbott ("Rainforest"), entered into a Tender and Support Agreement (the
"Tender and Support Agreement") as an inducement to Abbott entering into
the Agreement and Plan of Merger (the "Merger Agreement") dated January
11, 2009, by and among Abbott, Rainforest, and the Issuer.  Rainforest
agreed in the Merger Agreement to commence a tender offer (the "Offer")
to acquire all of the outstanding shares of Common Stock and the
associated preferred stock purchase rights of the Issuer, at a price per
share of $22.00, in cash without interest, subject to the satisfaction or
waiver of the conditions to the Offer.  ValueAct Master Fund and ValueAct
Master Fund III agreed in the Tender and Support Agreement to tender all
of their shares in the Offer, and not withdraw them unless the Offer
shall have been terminated in accordance with its terms.

      In addition, pursuant to the Tender and Support Agreement, ValueAct
Master Fund and ValueAct Master Fund III granted to Abbott, and any
individual designated in writing by Abbott, an irrevocable proxy to, at
any meeting of the stockholders of the Issuer called to vote on the
merger under the Merger Agreement (the "Merger") and the Merger
Agreement, and at any adjournment thereof, or in any other circumstances
upon which a vote, consent or other approval with respect to the Merger
and the Merger Agreement is sought, vote and exercise all voting and
related rights of such person of its shares of Common Stock in favor of
the adoption by the Issuer of the Merger and the approval of the Merger
Agreement and each of the transactions contemplated thereby.
Furthermore, pursuant to the Tender and Support Agreement, ValueAct
Master Fund and ValueAct Master Fund III agreed to not transfer any of
their shares of Common Stock during the term of the Tender and Support
Agreement, subject to certain exceptions, and agreed to vote against (or
execute a consent with respect to) any action or agreement that would
result in a breach of any covenant, representations or warranty or any
other obligation or other agreement of the Issuer under the Merger
Agreement and to vote against any action or agreement (other than the
Merger Agreement) that would, directly or indirectly, impede, interfere
with, delay, postpone or directly or indirectly, discourage the Offer or
the Merger.

      A copy of the Merger Agreement has been previously filed as Exhibit
2.1 to the Issuer's Current Report on Form 8-K dated January 13, 2009 and
is incorporated by reference herein.  A copy of the Tender and Support

--------------------------                          -------------------------
CUSIP NO. 00763M108                                             Page 12 of 17
-----------------------------------------------------------------------------

Agreement has been previously filed as Exhibit 10.1 to the Issuer's
Current Report on Form 8-K dated January 13, 2009 and is incorporated by
reference herein.

      Except as set forth in this Report and in connection with the Tender and
Support Agreement described above, the Reporting Persons have no plan or
proposals that relate to or would result in any of the transactions described
in subpararaphs (a) through (j) of Item 4 of Schedule 13D.  The Reporting
Persons may at any time reconsider and change their plans or proposals
relating to the foregoing.

Item 5.		Interest in Securities of the Issuer

       (a) and (b).  Set forth below is the beneficial ownership of shares of
Common Stock of the Issuer for each person named in Item 2.  Shares reported
as beneficially owned by ValueAct Master Fund and ValueAct Master Fund III
are also reported as beneficially owned by (i) ValueAct Management L.P. as
the manager of each such investment partnership, (ii) ValueAct Management
LLC, as General Partner of ValueAct Management L.P., (iii) ValueAct Holdings,
as the sole owner of the limited partnership interests of ValueAct Management
L.P. and the membership interests of ValueAct Management LLC and as the
majority owner of the membership interests of VA Partners I and VA Partners
III and (iv) ValueAct Holdings GP, as General Partner of ValueAct Holdings.
Shares reported as beneficially owned by ValueAct Master Fund are also
reported as beneficially owned by VA Partners I, as General Partner of
ValueAct Master Fund.  Shares reported as beneficially owned by ValueAct
Master Fund III are also reported as beneficially owned by VA Partners III,
as General Partner of ValueAct Master Fund III.  VA Partners I, VA Partners
III, ValueAct Management L.P., ValueAct Management LLC, ValueAct Holdings and
ValueAct Holdings GP also, directly or indirectly, may own interests in one
or more than one of the partnerships from time to time.  Unless otherwise
indicated below, by reason of such relationships each of the ValueAct Master
Fund and ValueAct Master Fund III is reported as having shared power to vote
or to direct the vote, and shared power to dispose or direct the disposition
of, such shares of Common Stock, with VA Partners I (only with respect to
ValueAct Master Fund), VA Partners III (only with respect to ValueAct Master
Fund III), ValueAct Management L.P., ValueAct Management LLC, ValueAct
Holdings and ValueAct Holdings GP.

         As of the date hereof, ValueAct Master Fund is the beneficial owner
of 8,168,832 shares of Common Stock, representing approximately 13.3% of the
Issuer's outstanding Common Stock (which shares may also be deemed to be
beneficially owned by VA Partners I).  As of the date hereof, ValueAct Master
Fund III is the beneficial owner of 642,803 shares of Common Stock,
representing approximately 1.0% of the Issuer's outstanding Common Stock
(which shares may also be deemed to be beneficially owned by VA Partners
III).

        ValueAct Management L.P., ValueAct Management LLC, ValueAct Holdings
and ValueAct Holdings GP may each be deemed the beneficial owner of an
aggregate of 8,811,635 shares of Common Stock, representing approximately
14.3% of the Issuer's outstanding Common Stock.




--------------------------                          -------------------------
CUSIP NO. 00763M108                                             Page 13 of 17
-----------------------------------------------------------------------------

       All percentages set forth in this Schedule 13D are based upon the
Issuer's reported 61,281,853 outstanding shares of Common Stock as
reported in the Issuer's Form 10-Q for the quarterly period ended September
26, 2008.

       (c)  On October 15, 2008 ValueAct Master Fund purchased 260,000 shares
of Common Stock from ValueAct Master Fund III at a price of $6.90 per share.
Except for the agreements described above, no transactions in the class of
securities reported have been effected during the past sixty (60) days
preceding the date of this report by any person named in Item 5(a) and (b).

       (d) and (e)  Not applicable.

Item 6.     Contracts, Arrangements, Understandings or Relationships with
            Respect to Securities of the Issuer

       Other than as described elsewhere in this Report and as previously
reported, the Reporting Persons have no understandings, arrangements,
relationships or contracts relating to the Issuer's Common Stock which are
required to be described hereunder.

Item 7.		Material to Be Filed as Exhibits

(1) Joint Filing Agreement.

      (2)   Tender and Support Agreement, dated as of January 11, 2009, by
and among G. Mason Morfit, ValueAct Capital Master Fund L.P., ValueAct Capital
Master Fund III, L.P., Abbott Laboratories and Rainforest Acquisition Inc.
previously filed as Exhibit 10.1 to the Current Report on Form 8-K filed by
the Issuer on January 13, 2009 and incorporated herein by reference.



--------------------------                          -------------------------
CUSIP NO. 00763M108                                             Page 14 of 17
-----------------------------------------------------------------------------
                                  SIGNATURE
          After reasonable inquiry and to the best of his knowledge and
belief, the undersigned certifies that the information set forth in this
statement is true, complete and correct.

                              POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below on this Schedule 13D hereby constitutes and appoints Jeffrey W. Ubben,
George F. Hamel, Jr., G. Mason Morfit and Allison Bennington, and each of
them, with full power to act without the other, his or its true and lawful
attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or it and in his or its name, place and stead, in any
and all capacities (until revoked in writing) to sign any and all amendments
to this Schedule 13D, and to file the same, with all exhibits thereto and
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents, and each of
them, full power and authority to do and perform each and every act and thing
requisite and necessary fully to all intents and purposes as he or it might
or could do in person, thereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

                              ValueAct Capital Master Fund L.P., by
                              VA Partners I, LLC, its General Partner

                              By:     /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer

                              ValueAct Capital Master Fund III L.P., by
                              VA Partners III, LLC, its General Partner

                              By:     /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer

                              VA Partners I, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer


                              VA Partners III, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer





--------------------------                          -------------------------
CUSIP NO. 00763M108                                             Page 15 of 17
-----------------------------------------------------------------------------

                               ValueAct Capital Management, L.P., by
                               ValueAct Capital Management, LLC its
                               General Partner

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer


                               ValueAct Capital Management, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer


                                ValueAct Holdings, L.P., by
                                ValueAct Holdings GP, LLC, its
                                General Partner

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer


                                 ValueAct Holdings GP, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer




 
--------------------------                          -------------------------
CUSIP NO. 00763M108                                             Page 16 of 17
-----------------------------------------------------------------------------
                                 Exhibit 1

                           JOINT FILING UNDERTAKING

The undersigned parties hereby agree that the Schedule 13D filed herewith
(and any amendments thereto) relating to the Common Stock of Advanced Medical
Optics, Inc. is being filed jointly on behalf of each of them with the
Securities and Exchange Commission pursuant to Section 13(d) of the
Securities Exchange Act of 1834, as amended.

                              ValueAct Capital Master Fund L.P., by
                              VA Partners I, LLC, its General Partner

                              By:     /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer

                              ValueAct Capital Master Fund III L.P., by
                              VA Partners III, LLC, its General Partner

                              By:     /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer

                              VA Partners I, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer


                              VA Partners III, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer


                               ValueAct Capital Management, L.P., by
                               ValueAct Capital Management, LLC its
                               General Partner

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer


                               ValueAct Capital Management, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer



--------------------------                          -------------------------
CUSIP NO. 00763M108                                             Page 17 of 17
-----------------------------------------------------------------------------

                                ValueAct Holdings, L.P., by
                                ValueAct Holdings GP, LLC, its
                                General Partner

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer


                                 ValueAct Holdings GP, LLC

                              By:    /s/  George F. Hamel, Jr.
                                --------------------------------------
Dated:  January 14, 2009        George F. Hamel, Jr., Chief Operating Officer