----

**Exhibit      (10)-dd**

**LETTER      WAIVER**

**Company**

**Guarantor**

**US$375,000,000      credit agreement (**
**Agreement)      dated 29 November 2005 (as amended) between (among others) the Company, the      Guarantor and Citibank International plc as facility agent**

| **1.  ** | **Background** |
|--------------------|----------------|

| (a)   | This              letter is supplemental to and amends the              Agreement. |
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| (b)   | Pursuant              to Clause 25 (Amendments and Waivers) of the Agreement, the Majority              Lenders have consented to the amendments to the Agreement contemplated              by              this letter. Accordingly, we are authorised to execute this letter              on              behalf of the Finance Parties. |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| **2.  ** | **Interpretation** |
|--------------------|--------------------|

| (a)   | Capitalised              terms defined in the Agreement have the same meaning when used in this              letter unless expressly defined in this              letter. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | The              provisions of Clause 1.2 (Construction) of the Agreement apply to this              letter as though they were set out in full in this letter except that              references to the Agreement are to be construed as references to this              letter. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c)**  ** | **Effective              Date**              means the date on which the Facility Agent gives notification to the              Obligors that it has received a copy of this letter countersigned by              the              Company and the Guarantor; provided that the Facility Agent must provide              such notification as soon as reasonably practicable but no later than              one              (1) business day after the Facility Agent has received a copy of the              fully              countersigned letter. |
|---------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| **3.  ** | **Amendments** |
|--------------------|----------------|

| (a)   | Subject              to subparagraph (b) below, the Agreement will be amended from the              Effective Date in accordance with subparagraph (c)              below. |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | The              Agreement will not be amended by this letter unless the Facility Agent              has              received a copy of this letter countersigned by the Company and the              Guarantor. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c)   | The              Agreement will be amended as follows: |
|-----------------|--------------------------------------------------------|

| (i)   | Clause              19.11(a) (BLIO Matters) of the Agreement will be amended by deleting              the              introductory sentence in its entirety and replacing it with the              following: |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | "Solely              for the Waiver Period, it is agreed that the BLIO Matters described              in the              BLIO Announcements and Confidential Disclosures, and the Other Matters              described in the Other Announcements and Confidential Disclosures will              not              result in or constitute a breach of this Agreement (including, without              limitation, any misrepresentation or breach of covenant) or a Default              to              the extent that:"; |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (ii)   | the              first line of Clause 19.11(a)(i) (BLIO Matters) of the Agreement will              be              amended by adding the words: "with respect to the BLIO Matters," before              the words "any restatements"; |
|------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (iii)   | Clause              19.11(a)(ii) (BLIO Matters) of the Agreement will be amended              by: |
|-------------------|---------------------------------------------------------------------------------------------------|

| (A)   | adding              the words "with respect to the BLIO Matters, and" before the words              "with              respect to any delay" in the first line thereof;              and |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (B)   | deleting              the reference to “31 May” in the last line thereof and replacing it with              “2 October”; |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------|

| (iv)   | the              following sentence shall be inserted as a new paragraph at the end              of              Clause 19.11(a) (BLIO Matters): |
|------------------|--------------------------------------------------------------------------------------------------------------------------------------------------|

|   | "Furthermore,              solely for the Waiver Period, the Lenders agree to waive any Default              which              may arise in the event that the Guarantor receives a 'Notice of Default'              due to default of performance, or breach of, any covenant or warranty              by              the Guarantor under section 501(4) of the              Indenture."; |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (v)   | the              definition of **BLIO              Announcements**              in              Clause 19.11(b) of the Agreement shall be amended              by: |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (A)   | deleting              “and” at the end of subparagraph (iii); |
|-----------------|---------------------------------------------------------------------------|

| (B)   | deleting              the full stop after the words "Guarantor's related investigation" at              the              end of subparagraph (iv) and replacing it with a semi-colon;              and |
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| (C)   | inserting              new subparagraphs (v) to (ix), inclusive as              follows: |
|-----------------|------------------------------------------------------------------------------------------|

|   | “(v)              press              release dated 17 March, 2006 relating to updated status of the Guarantor’s              financial reporting; |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (vi)              Form              12(b)-25, dated 17 March, 2006, with respect to delay in filing of              Form              10-K Annual Report for the fiscal year ended 31 December, 2005; |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (vii)              Form              12(b)-25, dated 11 May, 2006 relating to delay in filing of Form 10-Q              Quarterly Report for the quarterly period ended 1 April,              2006; |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (viii)              Form              8-K, dated 4 May, 2006, relating to current litigation and debt tender              offers and consent solicitations; and |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (ix)              Form              8-K, dated 8 May, 2006 relating to tender offer and consent solicitation              under the Indenture."; |
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| (vi)   | the              following definitions shall be inserted into Clause 19.11(b) of the              Agreement between the definitions of **BLIO              Matters**and              **Waiver              Period**: |
|------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | "**Confidential              Disclosures**means              the confidential information which the Guarantor disclosed to the Facility              Agent and Lenders verbally and in writing prior to 16 May, 2006 under              the              terms of confidentiality agreements executed with each              Lender. |
|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | **Indenture**means              the Guarantor's indenture with Citibank, N.A., dated 1 September, 1991,              as              supplemented and amended. |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | **Other              Announcements**means              the Guarantor's: |
|--------|-------------------------------------------------------------------------|

|   | (i)              press              release dated 31 March, 2006 relating to collaborative investigations              regarding fungal eye infections; |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (ii)              press              releases dated 10 April, 2006 relating to temporary suspension of              shipments of *ReNu*®              with *MoistureLoc*®              produced at Greenville, S.C. manufacturing              facility; |
|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (iii)              press              release dated 13 April, 2006 relating to removing US manufactured              *ReNu*®              with *MoistureLoc*®              from retailers’ shelves; |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (iv)              press              release dated 15 May, 2006 relating to worldwide withdrawal of              *ReNu*®              with *MoistureLoc*®; |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (v)              Form              12(b)-25, dated 11 May, 2006 relating to delay in filing of Form 10-Q              Quarterly Report for the quarterly period ended 1 April,              2006; |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (vi)              Form              8-K, dated 12 April, 2006, relating to the 10 April, 2006 press release; |
|--------|--------------------------------------------------------------------------------------------------------------|

|   | (vii)              Form              8-K, dated 14 April, 2006, relating to the 13 April, 2006 press              release; |
|--------|----------------------------------------------------------------------------------------------------------------------------|

|   | (viii)              Form              8-K, dated 4 May, 2006, relating to current litigation and debt tender              offers and consent solicitations; |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (ix)              Form              8-K dated 8 May, 2006 relating to tender offer and consent solicitation              under the Indenture; and |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (x)              Form              8-K, dated 15 May, 2006, relating to the 15 May, 2006 press              release. |
|--------|----------------------------------------------------------------------------------------------------------------------|

**        **

**            Other      Matters**

|   | (i)              financial,              accounting and tax matters (other than the BLIO Matters); and |
|--------|--------------------------------------------------------------------------------------------------------|

|   | (ii)              increased              reports of fungal eye infections among contact wearers and any              relationship, impact or affect such reports have on the *ReNu*®              with *MoistureLoc*®              product."; and |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (vii)   | the              definition of **Waiver              Termination Date**              in              Clause 19.11(b) of the Agreement shall be deleted in its entirety and              replaced with the following: |
|-------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | “**Waiver              Termination Date**              means the earlier of: |
|--------|------------------------------------------------------------------------------------|

|   | (ii)              the              date (if any) on which the trustee or holders of not less than 25 per              cent. of the principal amount of outstanding securities under any series              with an outstanding principal amount of at least US$50,000,000 under              the              Indenture have given to the Guarantor notice that the principal amount              of              such securities is due and payable              immediately.". |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| **4.  ** | **Further              Waiver** |
|--------------------|---------------------------------|

| **5.  ** | **Indenture** |
|--------------------|---------------|

| **6.  ** | **Guarantee** |
|--------------------|---------------|

| (a)   | agrees              to the amendment of the Agreement as contemplated by this letter;              and |
|-----------------|--------------------------------------------------------------------------------------------------------|

| (b)   | with              effect from the Effective Date, confirms that the guarantee given by              it              under the Agreement will: |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------|

| (i)   | continue              in full force and effect; and |
|-----------------|-----------------------------------------------------|

| (ii)   | extend              to the liabilities and obligations of the Company to the Finance Parties              under the Finance Documents as amended by this              letter. |
|------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| **7.  ** | **Amendment              fee** |
|--------------------|--------------------------------|

| (a)   | In              further consideration for the matters contemplated by this letter,              the              Company must pay to the Facility Agent for the account of the Lenders              which consented on or before the date of this letter to the amendments              to              the Agreement contemplated by this letter (the **Consenting              Lenders**)              a              monthly fee equal to 0.10 per cent. of the total Commitments of the              Consenting Lenders. The Facility Agent shall provide the Obligors with              a              listing of the Consenting Lenders by 19 May, 2006. The first such monthly              fee shall be payable no later than 1 June, 2006, and subsequent monthly              fees will be due on the first Business Day of each month thereafter              that              the Guarantor is delayed in filing its financial statements prior to              the              Waiver Termination Date. Payments will be made to the account notified              to              the Company by the Facility Agent for this purpose. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | All              amounts payable under this letter are exclusive of any value added              tax or              other taxes of any nature and will not be subject to counterclaim or              set-off for, or be otherwise affected by, any claim or dispute relating              to              any matter whatsoever and all such payments shall be made free and              clear              and without deduction for or on account of any present or future taxes,              charges, deductions or withholdings. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| **8.  ** | **Miscellaneous** |
|--------------------|-------------------|

| (a)   | This              letter is a Finance Document and a Fee              Letter. |
|-----------------|-------------------------------------------------------------------------------|

| (b)   | From              the Effective Date, the Agreement and this letter will be read and              construed as one document. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------|

| (c)   | Except              as otherwise provided in this letter, the Finance Documents remain              in full              force and effect. |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------|

| (d)   | Except              to the extent expressly waived in this letter, no waiver of any provision              of any Finance Document is given by the terms of this letter and the              Finance Parties expressly reserve all their rights and remedies in              respect              of any breach of, or other Default under, the Finance              Documents. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| **9.  ** | **Governing              law** |
|--------------------|--------------------------------|

**CITIBANK      INTERNATIONAL PLC**

**BAUSCH      & LOMB B.V.**

**BAUSCH      & LOMB INCORPORATED**