Document:

EXHIBIT 40
                                          GE Healthcare Financial Services, Inc.
                                                   2 Wisconsin Circle, 4th Floor
                                                           Chevy Chase, MD 20815
                                                                    301 664-9825

                                 March 12, 2003

LASERSIGHT INCORPORATED
LASERSIGHT TECHNOLOGIES, INC.
LASERSIGHT CENTERS INCORPORATED
LASERSIGHT PATENTS, INC.
PHOTOMED ACQUISITION, INC.
MRF, INC.
L.S. EXPORT, LTD.
LST LASER, S.A.
LASERSIGHT EUROPE GMBH

c/o LaserSight Incorporated
3300 University Boulevard, Suite 140
Winter Park, Florida  32792
Attention:  Mr. Greg Wilson, CFO

Re:  Loan and  Security  Agreement  dated as of March 12, 2001 (as amended  from
     time to time, the  "Agreement")  by and among  LASERSIGHT  INCORPORATED,  a
     Delaware   corporation,   LASERSIGHT   TECHNOLOGIES,   INC.,   a   Delaware
     corporation,  LASERSIGHT  CENTERS  INCORPORATED,  a  Delaware  corporation,
     LASERSIGHT PATENTS,  INC., a Delaware  corporation,  PHOTOMED  ACQUISITION,
     INC.,  a Delaware  corporation,  MRF,  INC., a Missouri  corporation,  L.S.
     EXPORT,  LTD., a company formed under the laws of the U.S.  Virgin Islands,
     LST  LASER,  S.A.,  a  company  formed  under the laws of Costa  Rica,  and
     LASERSIGHT  EUROPE  GMBH,  a  company  formed  under  the  laws of  Germany
     (collectively, "Borrower"), and HELLER HEALTHCARE FINANCE, INC., a Delaware
     corporation  ("Lender"),  providing  for a  revolving  credit  loan  in the
     maximum  aggregate  principal amount of $10,000,000 (the "Revolving  Credit
     Loan");

     Amended and Restated Secured Term Note dated as of February 15, 2002 (as
     amended from time to time, the "Term Note") by Borrower in favor of Lender
     evidencing a term loan in the initial principal sum of $3,000,000 (the
     "Term Loan", and collectively with the Revolving Credit Loan, the "Loans")

Dear Mr. Wilson:

<PAGE>

         Reference is made to the Loan Agreement and the Term Note. All
capitalized terms used but not defined in this letter agreement shall have the
respective meanings given them in the Loan Agreement.

         The Loans each mature on March 12, 2003. Borrower has requested that
Lender extend the maturity of each Loan to April 12, 2003. Accordingly, upon
Lender's receipt of written acceptance of this letter agreement by Borrower, the
maturity of each of the Loans shall be deemed extended until April 12, 2003.
Such extension is made upon the following terms and conditions:

         1. The entire remaining principal balance of each Loan then
outstanding, together with all unpaid interest accrued thereon, and all other
unpaid fees, costs and charges, shall become immediately due and payable on
April 12, 2003, if payment is not made or demanded sooner; provided that
advances made under the Revolving Credit Loan during such extension period shall
be subject to Lender's sole discretion.

         2. Borrower hereby confirms and agrees to the following:

                  (a) Any further extension of either Loan must be made via
binding written agreement, and no such agreements exist as of the date of this
letter agreement. No past, present or future verbal discussions with regard to a
further extension of either of the Loans shall be binding upon Lender. No
representations have been made by Lender as to any future extension of either
Loan.

                  (b) Borrower has no defenses, counterclaims, setoffs,
recoupments or other adverse claims or causes of action of any kind existing
with respect to the Loans, the Obligations, the Loan Documents or this letter
agreement.

                  (c) The Loan Documents, and all covenants, agreements and
conditions set forth therein, are hereby ratified and reaffirmed by Borrower as
of the date hereof and shall remain in full force and effect as modified herein.
Nothing herein is intended or shall be construed to constitute a novation of the
Loan Documents or the lending relationship between Borrower and Lender.

                  (d) Nothing herein is intended or shall be construed to waive
(i) any defaults which may now or in the future exist under the Loan Documents
or (ii) any rights and remedies of Lender in respect of such defaults,
including, but not limited to, the right to accelerate the maturity of either
Loan.

                  (e) Borrower hereby fully, finally, and absolutely and forever
releases and discharges Lender and its present and former directors,
shareholders, officers, employees, agents, representatives, successors and
assigns, and their separate and respective heirs, personal representatives,
successors and assigns, from any and all actions, causes of action, claims,
debts, damages, demands, liabilities, obligations and suits, of whatever kind or
nature, in law or equity of Borrower, whether now known or unknown to Borrower,
and whether contingent or matured (i) in respect of either Loan, the Loan
Agreement, the Term Note or any other Loan Document, or the actions or omissions

                                       2
<PAGE>

of Lender in respect of either Loan, the Loan Agreement, the Term Note or the
Loan Documents; or (ii) arising from events occurring prior to the date of this
letter agreement.

3. This letter agreement shall be governed by and construed in accordance with
the laws of the State of Maryland. This letter agreement may be executed in any
number of counterparts, including by facsimile signature, each of which shall be
deemed an original, but all of which together shall constitute but one
instrument.

         4. Borrower shall pay Lender an extension fee of one thousand dollars
($1,000.00). This fee shall be non-refundable. If on or prior to April 12, 2003,
Lender agrees to renew either Loan for one year from the Closing Date, this
extension fee may be applied toward payment of the renewal commitment fee.

                               [SIGNATURES FOLLOW]

                                       3
<PAGE>

         Please indicate your agreement with the terms and conditions set forth
above by signing below where indicated and returning the countersigned letter to
me by facsimile (301-664-9890).

                                       Very truly yours,

                                       HELLER HEALTHCARE FINANCE, INC.

                                       By:    /s/R. Hanes Whiteley
                                       Name:  R. Hanes Whiteley
                                       Title: Vice President

THE FOREGOING IS ACKNOWLEDGED AND AGREED TO AS OF THIS 12th DAY OF MARCH, 2003.

LASERSIGHT INCORPORATED
a Delaware corporation

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Secretary

LASERSIGHT TECHNOLOGIES, INC.
a Delaware corporation

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Secretary

LASERSIGHT CENTERS INCORPORATED
a Delaware corporation

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Treasurer

LASERSIGHT PATENTS, INC.
a Delaware corporation

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Secretary

                                       4
<PAGE>

PHOTOMED ACQUISITION, INC.
a Delaware corporation

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Secretary

MRF, INC.
a Missouri corporation

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Secretary

L.S. EXPORT, LTD. a company organized under the laws
of the U.S. Virgin Islands

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Treasurer

LST LASER, S.A.
a company organized under the laws of Costa Rica

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Treasurer

LASERSIGHT EUROPE GMBH
a company organized under the laws of Germany

By:    /s/ Gregory L. Wilson
Name:  Gregory L. Wilson
Title: Managing Director

                                       5EXHIBIT 10.41

                                 $10,000,000.00

                                 AMENDMENT NO. 3

                                       TO

                           LOAN AND SECURITY AGREEMENT

                               AND LIMITED WAIVER

                      originally dated as of March 12, 2001

                                  by and among

                             LASERSIGHT INCORPORATED
                          LASERSIGHT TECHNOLOGIES, INC.
                         LASERSIGHT CENTERS INCORPORATED
                            LASERSIGHT PATENTS, INC.
                           PHOTOMED ACQUISITION, INC.
                                    MRF, INC.
                                L.S. EXPORT, LTD.
                                 LST LASER, S.A.
                             LASERSIGHT EUROPE GMBH

                            (collectively "Borrower")

                                       and

                         HELLER HEALTHCARE FINANCE, INC.

                                   ("Lender")

                          Executed as of March 31, 2003

<PAGE>

        AMENDMENT NO. 3 TO LOAN AND SECURITY AGREEMENT AND LIMITED WAIVER

         THIS AMENDMENT NO. 3 TO LOAN AND SECURITY AGREEMENT AND LIMITED WAIVER
(this "Amendment") is executed as of the 31st day of March, 2003, by and among
LASERSIGHT INCORPORATED, a Delaware corporation ("LaserSight"), LASERSIGHT
TECHNOLOGIES, INC., a Delaware corporation, LASERSIGHT CENTERS INCORPORATED, a
Delaware corporation, LASERSIGHT PATENTS, INC., a Delaware corporation, PHOTOMED
ACQUISITION, INC., a Delaware corporation, MRF, INC., a Missouri corporation,
L.S. EXPORT, LTD., a company formed under the laws of the U.S. Virgin Islands,
LST LASER, S.A., a company formed under the laws of Costa Rica, and LASERSIGHT
EUROPE GMBH, a company formed under the laws of Germany (collectively,
"Borrower"), and HELLER HEALTHCARE FINANCE, INC., a Delaware corporation (the
"Lender").

                                    RECITALS

         WHEREAS, pursuant to that certain Loan and Security Agreement dated
March 12, 2001 by and among Borrower and Lender (as previously amended, as
amended hereby and as it may be further amended, modified or restated from time
to time, collectively, the "Loan Agreement"), the Lender agreed to make
available to Borrower a revolving credit loan (the "Loan");

         WHEREAS, Borrower has requested that Lender agree to extend the term of
the Loan and to make certain other modifications to the Loan Agreement;

         WHEREAS, Borrower has breached certain financial covenants set forth in
that certain Amendment No. 2 to the Loan Agreement as of the period ended
December 31, 2002;

         WHEREAS, Lender has agreed to provide the limited waivers and make the
modifications to the Loan Agreement requested by Borrower on the condition,
among other things, that the parties hereto execute and deliver this Amendment
and the other related documents referred to herein and otherwise comply with the
terms and conditions set forth herein.

         NOW, THEREFORE, in consideration of the foregoing, the terms and
conditions set forth in this Amendment, and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
Lender and Borrower hereby agree as follows:

         Section 1. Definitions. Unless otherwise defined herein, all
capitalized terms used herein without definition shall have the meanings
assigned to such terms in the Loan Agreement.

         Section 2. Confirmation of Representations and Warranties. Each entity
comprising Borrower hereby (a) confirms that all of the representations and
warranties set forth in Article IV of the Loan Agreement are true and correct

                                       2
<PAGE>

with respect to such entity, and (b) specifically represents and warrants to
Lender that it has good and marketable title to all of its respective
Collateral, free and clear of any lien (other than Permitted Liens) or security
interest in favor of any other person or entity.

         Section 3. Limited Waiver. On the terms and subject to the conditions
set forth in this Amendment, including but not limited to those set forth in
Section 6 hereof, Lender hereby waives compliance by Borrower with Section 7.20
of the Agreement (the "Specified Breach") for the quarter ended December 31,
2002 only.

         Section 4. Amendments to Loan Agreement. On the Effective Date (as
defined below), the Loan Agreement shall be automatically modified (and shall,
thereafter, be deemed to have been modified effective as of such date without
further action of the parties) as follows:

                  (a)  Section  1.1 of the Loan Agreement shall be amended and
         restated in its entirety to read as follows:

                           "Section 1.1. Account. "Account" means any right to
         payment of a monetary obligation, whether or not earned by performance,
         including, but not limited to, the right to payment of management fees.
         Without limiting the generality of the foregoing, the term "Account"
         shall further include any "account" (as that term is defined in the
         Uniform Commercial Code now or hereafter in effect), any accounts
         receivable, any "health-care-insurance receivables" (as that term is
         defined in the Uniform Commercial Code now or hereafter in effect), any
         "payment intangibles" (as that term is defined in the Uniform
         Commercial Code now or hereafter in effect) and all other rights to
         payment of every kind and description, whether or not earned by
         performance."

                  (b) Section 2.3(a) shall be modified so as to substitute the
name "SunTrust Bank" for the name "The Huntington National Bank" appearing
therein.

                  (c) Section 2.8(a) of the Loan Agreement shall be amended and
restated in its entirety to read as follows:

                           "(a) Subject to Lender's right to cease making
         Revolving Loans to Borrower upon or after any Event of Default, this
         Agreement shall be in effect until September 12, 2004, unless
         terminated as provided in this Section 2.8 (the "Term"), and this
         Agreement shall be renewed for one (1) year periods thereafter upon the
         mutual written agreement of the parties."

                                       3
<PAGE>

                  (d) Section 3.1 of the Loan Agreement shall be amended by
deleting the "and" appearing at the end of subparagraph (h), deleting the
existing subparagraph (i), and by adding the following at the end of
subparagraph (h):

                           "(i) All of Borrower's letter-of-credit rights and
         commercial tort claims and, to the extent not listed above, all of
         Borrower's rights to any proceeds from insurance policies after payment
         of prior interests; and

                           (j) To the extent not included above as original
         collateral, the proceeds (including, without limitation, insurance
         proceeds) of all of the foregoing."

                  (e) Section  6.3 of the Loan  Agreement  shall be amended and
restated in its entirety to read as follows:

                           "Section 6.3. Existence, Good Standing and Compliance
         with Laws. Borrower will do or cause to be done all things necessary
         (a) to obtain and keep in full force and effect all corporate
         existence, rights, licenses, privileges, and franchises of Borrower
         necessary to the ownership of its property or the conduct of its
         business, and comply with all applicable present and future laws,
         ordinances, rules, regulations, orders and decrees of any Governmental
         Authority having or claiming jurisdiction over Borrower; and (b) to
         maintain and protect the properties used or useful in the conduct of
         the operations of Borrower, in a prudent manner, including without
         limitation the maintenance at all times of such insurance upon its
         insurable property and operations as required by law or by Section 6.7.
         Notwithstanding the foregoing, Borrower shall be permitted to
         liquidate, wind-up or dissolve each of LS Japan Company, Ltd., LST
         Laser, S.A. and LaserSight Europe GmbH, provided, that the covenants
         set forth in Section 7.9 are met as of the effective date of
         dissolution of each such entity."

                  (f) Section 7.4 of the Loan Agreement shall be amended and
restated in its entirety to read as follows:

                           "Section 7.4. Restriction on Fundamental Changes.
         Borrower will not: (a) enter into any transaction of merger or
         consolidation; (b) liquidate, wind-up or dissolve itself (or suffer any
         liquidation or dissolution); provided that, notwithstanding the
         foregoing, Borrower shall be permitted to liquidate, wind-up or
         dissolve each of LS Japan Company, Ltd., LST Laser, S.A. and LaserSight
         Europe GmbH, provided, that the covenants set forth in Section 7.9 are
         met as of the effective date of dissolution of each such entity; (c)
         convey, sell, lease, sublease, transfer or otherwise dispose of, in one
         transaction or a series of transactions, any of its assets (except for

                                       4
<PAGE>

         any sales of assets undertaken in the ordinary course of Borrower's
         business), or the capital stock of any subsidiary of Borrower, whether
         now owned or hereafter acquired; or (d) acquire by purchase or
         otherwise all or any substantial part of the business or assets of, or
         stock or other evidence of beneficial ownership of, any Person.
         Borrower agrees that compliance with this Section 7.4 is a material
         inducement to Lender's advancing credit under this Note. Borrower
         further agrees that in addition to all other remedies available to
         Lender, Lender shall be entitled to specific enforcement of the
         covenants in this Section 7.4, including injunctive relief."

                  (g) The last sentence of Section 7.9 of the Loan Agreement
shall be amended and restated in its entirety to read as follows:

                           "Borrower will not (a) cause or permit any of LS
         Japan Company, Ltd., LST Laser, S.A. and LaserSight Europe GmbH to have
         any assets, (b) deposit money in any account held by or established for
         the benefit of LS Japan Company, Ltd., LST Laser, S.A. and LaserSight
         Europe GmbH, and (c) utilize LS Japan Company, Ltd., LST Laser, S.A.
         and LaserSight Europe, GmbH in the conduct of Borrower's business.

                  (h) Section 7.13 of the Loan Agreement shall be amended and
restated in its entirety to read as follows:

                           "Section 7.13. Use of Lender's Name/Press Releases.
         Borrower will not use Lender's name (or the name of any of Lender's
         affiliates) in connection with any of its business operations. Borrower
         will not and will not permit its Affiliates to, in the future, issue
         any press release or other public disclosure using the name of Lender,
         General Electric Capital Corporation or any of their respective
         Affiliates or referring to this Agreement or the other Loan Documents
         without at least two (2) Business Days prior written notice to Lender
         and without the prior written consent of Lender unless (and only to the
         extent that) Borrower or such Affiliate of Borrower is required to so
         disclose under law and then, in any event, such Borrower or Affiliate
         will consult with Lender before issuing such press release or other
         public disclosure. Borrower consents to the publication by Lender of a
         tombstone or similar advertising material relating to the financing
         transactions contemplated by this Agreement. Borrower may disclose to
         third parties that Borrower has a borrowing relationship with Lender.
         Nothing contained in this Agreement is intended to permit or authorize
         Borrower to make any contract on behalf of Lender."

                  (i) Section 7.18 of the Loan Agreement shall be amended and
restated in its entirety to read as follows:

                                       5
<PAGE>

                           "Section  7.18.  Net Worth.  Borrower will not at any
         time allow its net worth (as computed in accordance with GAAP) to fall
         below $1,000,000.00"

                  (j) Section 7.19 of the Loan Agreement shall be amended and
restated in its entirety to read as follows:

                           "Section 7.19. Tangible Net Worth. Borrower will not
         at any time allow its "tangible net worth" (as defined below), to fall
         below $(4,000,000.00). For purposes hereof, "tangible net worth" means
         assets (excluding "intangible assets" (as defined below)) less
         liabilities. For purposes hereof, "intangible assets" means all
         intangible assets (computed in accordance with GAAP) including, without
         limitation, goodwill, intellectual property, organizational costs and
         acquired technology."

                  (k) Section 7.20 of the Loan Agreement shall be amended and
restated in its entirety to read as follows:

                           "Section 7.20. Net Revenue. Borrower will not at any
         time allow its net revenue (determined in accordance with GAAP) to fall
         below $2,000,000.00 for any of the quarters ending March 31, 2003, June
         30, 2003, September 30, 2003, December 31, 2003, March 31, 2004 and
         June 30, 2004."

                  (l) New Sections 9.22 and 9.23 shall be added to the Loan
Agreement as follows:

                           "Section 9.22.  Appointment of Agent under this
         Agreement.

                     (a) Each of the entities comprising Borrower (other than
         LaserSight Incorporated ("LaserSight")) hereby irrevocably appoints and
         constitutes LaserSight as its agent to request and receive the Loan
         (and to otherwise act on behalf of each such entity pursuant to this
         Agreement and the other Loan Documents) from Lender in the name or on
         behalf of each such entity. Lender may disburse the Loan to the bank
         account of any one or more of such entities without notice to any of
         the other entities comprising Borrower or any other Person at any time
         obligated on or in respect of the Obligations.

                     (b) Each of the entities comprising Borrower (other than
         LaserSight) hereby irrevocably appoints and constitutes LaserSight as
         its agent to receive statements of account and all other notices from
         Lender with respect to the Obligations or otherwise under or in
         connection with this Agreement and the other Loan Documents.

                                       6
<PAGE>

                     (c) No purported termination of the appointment of
         LaserSight as agent hereunder shall be effective without the prior
         written consent of Lender.

                           Section 9.23.  Cross-Guaranty.

                 (a) Each Borrower hereby agrees that such Borrower is jointly
         and severally liable for, and hereby absolutely and unconditionally
         guarantees to Lender and its successors and assigns the full and prompt
         payment (whether at stated maturity, by acceleration or otherwise) and
         performance of, all Obligations owed or hereafter owing to Lender by
         each other Borrower. Each Borrower agrees that its guaranty obligation
         hereunder is a continuing guaranty of payment and performance and not
         of collection, that its obligations under this Section 9.23 shall not
         be discharged until payment and performance, in full, of the
         Obligations has occurred, and that its obligations under this Section
         9.23 shall be absolute and unconditional, irrespective of, and
         unaffected by (i) the genuineness, validity, regularity, enforceability
         or any future amendment of, or change in, this Agreement, any other
         Loan Document or any other agreement, document or instrument to which
         any Borrower is or may become a party; (ii) the absence of any action
         to enforce this Agreement (including this Section 9.23) or any other
         Loan Document or the waiver or consent by Lender with respect to any of
         the provisions thereof; (iii) the existence, value or condition of, or
         failure to perfect its lien against, any security for the Obligations
         or any action, or the absence of any action, by Lender in respect
         thereof (including the release of any such security); (iv) the
         insolvency of any Borrower; or (v) any other action or circumstances
         that might otherwise constitute a legal or equitable discharge or
         defense of a surety or guarantor.

                (b) Each Borrower shall be regarded, and shall be in the same
         position, as principal debtor with respect to the Obligations
         guaranteed hereunder.

                (c) Each Borrower expressly waives all rights it may have now or
         in the future under any statute, or at common law, or at law or in
         equity, or otherwise, to compel Lender to marshal assets or to proceed
         in respect of the Obligations guaranteed hereunder against any other
         Borrower, any other party or against any security for the payment and
         performance of the Obligations before proceeding against, or as a
         condition to proceeding against, such Borrower. It is agreed among each
         Borrower and Lender that the foregoing waivers are of the essence of
         the transaction contemplated by this Agreement and the other Loan
         Documents and that, but for the provisions of this Section 9.23 and
         such waivers, Lender would decline to enter into this Agreement.

                                       7
<PAGE>

                (d) Each Borrower agrees that the provisions of this Section
         9.23 are for the benefit of Lender and its successors, transferees,
         endorsees and assigns, and nothing herein contained shall impair, as
         between any other Borrower and Lender, the obligations of such other
         Borrower under the Loan Documents.

                (e) Notwithstanding anything to the contrary in this Agreement
         or in any other Loan Document, and except as set forth in this Section
         9.23, each Borrower hereby expressly and irrevocably subordinates to
         payment of the Obligations any and all rights at law or in equity to
         subrogation, reimbursement, exoneration, contribution, indemnification
         or set off and any and all defenses available to a surety, guarantor or
         accommodation co-obligor until the Obligations are indefeasibly paid in
         full in cash. Each Borrower acknowledges and agrees that this
         subordination is intended to benefit Lender and shall not limit or
         otherwise affect such Borrower's liability hereunder or the
         enforceability of this Section 9.23, and that Lender and its successors
         and assigns are intended third party beneficiaries of the waivers and
         agreements set forth in this Section 9.23.

                (f) If Lender may, under applicable law, proceed to realize its
         benefits under any of the Loan Documents giving Lender a lien upon any
         Collateral, whether owned by any Borrower or by any other Person,
         either by judicial foreclosure or by non-judicial sale or enforcement,
         Lender may, at its sole option, determine which of its remedies or
         rights it may pursue without affecting any of its rights and remedies
         under this Section 9.23. If, in the exercise of any of its rights and
         remedies, Lender shall forfeit any of its rights or remedies, including
         its right to enter a deficiency judgment against any Borrower or any
         other Person, whether because of any applicable laws pertaining to
         "election of remedies" or the like, each Borrower hereby consents to
         such action by Lender and waives any claim based upon such action, even
         if such action by Lender shall result in a full or partial loss of any
         rights of subrogation that each Borrower might otherwise have had but
         for such action by Lender. Any election of remedies that results in the
         denial or impairment of the right of Lender to seek a deficiency
         judgment against any Borrower shall not impair any other Borrower's
         obligation to pay the full amount of the Obligations. In the event
         Lender shall bid at any foreclosure or trustee's sale or at any private
         sale permitted by law or the Loan Documents, Lender may bid all or less
         than the amount of the Obligations and the amount of such bid need not
         be paid by Lender but shall be credited against the Obligations. The
         amount of the successful bid at any such sale, whether Lender or any
         other party is the successful bidder, shall be conclusively deemed to
         be the fair market value of the Collateral and the difference between
         such bid amount and the remaining balance of the Obligations shall be
         conclusively deemed to be the amount of the Obligations guaranteed
         under this Section 9.23, notwithstanding that any present or future law

                                       8
<PAGE>

         or court decision or ruling may have the effect of reducing the amount
         of any deficiency claim to which Lender might otherwise be entitled but
         for such bidding at any such sale.

                (g) Notwithstanding any provision herein contained to the
         contrary, each Borrower's liability under this Section 9.23 (which
         liability is in any event in addition to amounts for which such
         Borrower is primarily liable under Section 2) shall be limited to an
         amount not to exceed as of any date of determination the greater of:

                        (i) the net amount of all Loans advanced to any other
         Borrower  under  this  Agreement  and then  re-loaned  or  otherwise
         transferred  to, or for the benefit of, such Borrower; and

                        (ii) the amount that could be claimed by Lender from
         such Borrower under this Section 9.23 without rendering such claim
         voidable or avoidable under Section 548 of Chapter 11 of the Bankruptcy
         Code or under any applicable state Uniform Fraudulent Transfer Act,
         Uniform Fraudulent Conveyance Act or similar statute or common law
         after taking into account, among other things, such Borrower's right of
         contribution and indemnification from each other Borrower under Section
         9.23.

                (h) To the extent that any Borrower shall make a payment under
         this Section 9.23 of all or any of the Obligations
         (other than Loans made to that Borrower for which it is primarily
         liable) (a "Guarantor Payment") that, taking into account all other
         Guarantor Payments then previously or concurrently made by any other
         Borrower, exceeds the amount that such Borrower would otherwise have
         paid if each Borrower had paid the aggregate Obligations satisfied by
         such Guarantor Payment in the same proportion that such Borrower's
         Allocable Amount (as defined below) (as determined immediately prior to
         such Guarantor Payment) bore to the aggregate Allocable Amounts of each
         of the Borrowers as determined immediately prior to the making of such
         Guarantor Payment, then, following indefeasible payment in full in cash
         of the Obligations and termination of the Commitments, such Borrower
         shall be entitled to receive contribution and indemnification payments
         from, and be reimbursed by, each other Borrower for the amount of such
         excess, pro rata based upon their respective Allocable Amounts in
         effect immediately prior to such Guarantor Payment.

                (i) As of any date of determination, the "Allocable Amount" of
         any Borrower shall be equal to the maximum amount of the claim that
         could then be recovered from such Borrower under this Section 9.23
         without rendering such claim voidable or avoidable under Section 548 of
         Chapter 11 of the Bankruptcy Code or under any applicable state Uniform

                                       9
<PAGE>

         Fraudulent Transfer Act, Uniform Fraudulent Conveyance Act or similar
         statute or common law.

                (j) This Section 9.23 is intended only to define the relative
         rights of Borrowers and nothing set forth in this
         Section 9.23 is intended to or shall impair the obligations of
         Borrowers, jointly and severally, to pay any amounts as and when the
         same shall become due and payable in accordance with the terms of this
         Agreement, including Section 9.23. Nothing contained in this Section
         9.23 shall limit the liability of any Borrower to pay the Loans made
         directly or indirectly to that Borrower and accrued interest, fees and
         expenses with respect thereto for which such Borrower shall be
         primarily liable.

                 (k) The parties hereto acknowledge that the rights of
         contribution and indemnification hereunder shall constitute assets of
         the Borrower to which such contribution and indemnification is owing.

                 (l) The rights of the indemnifying Borrowers against other
         credit parties under this Section 9.23 shall be exercisable upon the
         full and indefeasible payment of the Obligations and the termination of
         the commitments of Lender hereunder.

                 (m) The liability of Borrowers under this Section 9.23 is in
         addition to and shall be cumulative with all liabilities of each
         Borrower to Lender under this Agreement and the other Loan Documents to
         which such Borrower is a party or in respect of any Obligations or
         obligation of the other Borrower, without any limitation as to amount,
         unless the instrument or agreement evidencing or creating such other
         liability specifically provides to the contrary."

         Section 5. Advances under the Loan Agreement. Borrower hereby
acknowledges and agrees that, notwithstanding anything in the Loan Agreement to
the contrary, any and all advances of Revolving Credit Loans made under the Loan
Agreement shall be made at Lender's sole discretion, and that Lender is not
obligated, and nothing in this Amendment shall be deemed to obligate Lender, to
make advances of Revolving Credit Loans to Borrower under the Loan Agreement
unless and until all of the conditions to such advances have been met to
Lender's sole satisfaction.

         Section 6. Effective Date. The obligation of Lender to enter into and
accept this Amendment is subject to satisfaction of all of the following
conditions in Lender's sole discretion (the date of satisfaction of all of the
following conditions in Lender's sole discretion, the "Effective Date"):

                                       10
<PAGE>

         (a) Lender shall have received two (2) originals of this Amendment duly
executed by an authorized officer or representative, as the case may be, of each
entity comprising Borrower; provided that Lender agrees to accept the executed
version of this Amendment from Borrower by facsimile, with original signatures
to follow via overnight mail;

         (b) Lender shall have received one (1) original of that certain Second
Amended and Restated Term Note (the "Amended Term Note") duly executed by an
authorized officer or representative, as the case may be, of each entity
comprising Borrower; provided that Lender agrees to accept the executed version
of the Amended Term Note from Borrower by facsimile, with original signatures to
followvia overnight mail;

         (c) Lender shall have received updated Schedules to each of the Loan
Agreement and Amended Term Note, which updated Schedules shall be satisfactory
to Lender; and

         (d) Lender shall have received payment in full of the Commitment Fee
(as defined in the Amended Term Note);

         (e) Lender shall be satisfied that it has a perfected first priority
security interest in the Collateral, with only such exceptions thereto as shall
have been approved by it;

         (f) Borrower shall have provided Lender with resolutions of the Board
of Directors, members or partners, as the case may be, of each entity comprising
Borrower, authorizing the execution, delivery and performance of Amendment and
the Amended Term Note and otherwise in such form as shall be reasonably
satisfactory to Lender;

         (g) the representations and warranties set forth in this Amendment, the
Loan Agreement and the Amended Term Note shall be true and correct as of such
date and after giving effect to this Amendment and the Amended Term Note, as
applicable (unless any such representation or warranty by its terms is intended
to refer specifically to any earlier date); and

         (h) no Event of Default or any event that, with the giving of notice or
the passage of time or both, could be a default or an Event of Default, shall
have occurred or be continuing under the Loan Agreement or any of the other Loan
Documents, or the Term Note or any other instruments, documents, agreements or
certificates delivered by Borrower in connection therewith.

         Notwithstanding the foregoing, should Borrower be unable to produce the
items set forth in subparagraphs (c) and (f) above as of the date such other
conditions to effectiveness of this Amendment set forth above have been met,
Lender agrees that it will accept delivery of such items set forth in
subparagraphs (c) and (f) by the date that is no later than ten (10) days after
such date, so long as, as of the date of delivery of the items set forth in
subparagraphs (c) and (f), the conditions set forth in subparagraphs (g) and (h)
are met as of such date of delivery. In addition, notwithstanding the foregoing,

                                       11
<PAGE>

Borrower shall not be required to produce the items set forth in subparagraph
(g) above with respect to LS Japan Company, Ltd., LST Laser, S.A. and LaserSight
Europe GmbH; provided that, if at any time Borrower ceases to be in compliance
with Section 7.9 of the Loan Agreement with respect to any or all of such
entities, in addition to all other rights and remedies of Lender in connection
with such non-compliance, Lender shall be entitled to request Board of Directors
resolutions of each (or all, as applicable) of such entities in accordance with
such subparagraph (f).

         Section 7. Fees; Costs.

                  (a) Lender hereby waives any requirement that Borrower pay any
commitment fee, amendment fee or other similar fee in connection with this
Amendment.

                  (b) Each Borrower, jointly and severally, agrees to reimburse
Lender for any and all costs and expenses (including but not limited to the
reasonable document preparation and review fees of Lender's in-house counsel) in
connection with this Amendment and the Amended Term Note.

         Section 8. Enforceability.  This Amendment constitutes the legal, valid
and binding obligation of Borrower and is enforceable against Borrower in
accordance with its terms.

         Section 9. No Novation. The execution and delivery of this Amendment
shall not, and shall not be deemed to, constitute a novation of any indebtedness
or other obligations owing to the Lender under the Loan Agreement or any Loan
Documents based on any facts or events occurring or existing prior to the
execution and delivery of this Amendment. On the date of this Amendment, the
Loan Agreement shall be amended and supplemented as described in this Amendment,
and all loans and other obligations of the Borrower outstanding as of the date
hereof under the Loan Agreement and the Loan Documents shall be deemed to be
loans and obligations outstanding under the Loan Agreement and the Loan
Documents as amended, without further action by any person.

         Section 10. Limitation on Waiver. The limited waiver of Lender set
forth in this Amendment shall be limited strictly as written, and shall not
constitute, nor be deemed to constitute, a waiver of any breach or defaults or
Events of Default other than the Specified Breach. Other events may have
occurred that constitute breaches, defaults or Events of Default, and nothing
contained herein shall be deemed to constitute a waiver by Lender of its rights
in connection therewith, all of which are hereby expressly reserved by Lender.

         Section 11. Further Documentation. In the event any further
documentation or information is deemed necessary or appropriate by Lender in the
exercise of its rights under the Loan Documents or to correct patent mistakes in
the Loan Documents, Borrower shall provide, or cause to be provided, to Lender,
at Borrower's cost and expense, such documentation or information. Borrower
shall execute and deliver to Lender such documentation, including but not
limited to, any amendments, corrections, deletions or additions to the Loan

                                       12
<PAGE>

Documents as is required by Lender; provided, however, that Borrower shall not
be required to do anything that has the effect of changing the essential
economic terms of the loan set forth in the Loan Documents.

         Section 12. Release. Borrower hereby fully, finally, and absolutely and
forever releases and discharges Lender and its present and former directors,
shareholders, officers, employees, agents, representatives, successors and
assigns, and their separate and respective heirs, personal representatives,
successors and assigns, from any and all actions, causes of action, claims,
debts, damages, demands, liabilities, obligations, and suits, of whatever kind
or nature, in law or equity of Borrower, whether now known or unknown to
Borrower, and whether contingent or matured (collectively, "Claims") in respect
of the Loan Agreement, the Loan Documents, or the actions or omissions of Lender
in respect of the Loan Agreement and the Loan Documents, arising from events
occurring prior to the date of this Amendment.

         Section 13. Reference to the Effect on the Loan Agreement.

         (a) On and after the date hereof, each reference in the Loan Agreement
to "this Agreement," "hereunder," "hereof," "herein" or words of similar import
shall mean and be a reference to the Loan Agreement as amended by this
Amendment.

         (b) Except as specifically amended above, the Loan Agreement, and all
other Loan Documents, shall remain in full force and effect, and are hereby
ratified and confirmed.

         (c) The execution, delivery and effectiveness of this Amendment shall
not, except as expressly provided in this Amendment, operate as a waiver of any
right, power or remedy of Lender, nor constitute a waiver of any provision of
the Loan Agreement, or any other documents, instruments and agreements executed
or delivered in connection with the Loan Agreement.

         Section 14. Governing Law. This Amendment shall be governed by and
construed in accordance with the laws of the State of Maryland without regard to
any otherwise applicable conflicts of laws principles.

         Section 15. Headings. Section headings in this Amendment are included
for convenience of reference only and shall not constitute a part of this
Amendment for any other purpose.

         Section 16. Counterparts.  This  Amendment  may be executed in any
number of counterparts (and by facsimile), each of which counterpart shall be
deemed an original,  but all of which shall constitute one and the same
instrument.

                               [SIGNATURES FOLLOW]

                                       13
<PAGE>

         IN WITNESS WHEREOF, intending to be legally bound, and intending that
this Amendment No. 3 to Loan and Security Agreement and Limited Waiver
constitutes and instrument executed under seal, the parties have caused this
Amendment No. 3 to Loan and Security Agreement and Limited Waiver to be executed
under seal as of the date first above written.

                                           LENDER:

                                           HELLER HEALTHCARE FINANCE, INC.,
                                           a Delaware corporation

                                           By: /s/ R. Hanes Whiteley
                                              -------------------------
                                           Name: R. Hanes Whiteley
                                           Title:Vice President

                                           BORROWER:

                                           LASERSIGHT INCORPORATED,
                                           a Delaware corporation

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title:    Secretary

                                           LASERSIGHT TECHNOLOGIES, INC.,
                                           a Delaware corporation

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title:    Secretary

                                           LASERSIGHT CENTERS INCORPORATED,
                                           a Delaware corporation

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title:    Treasurer

                       [SIGNATURES CONTINUED ON NEXT PAGE]

                                       14
<PAGE>

                                           LASERSIGHT PATENTS, INC.,
                                           a Delaware corporation

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title:    Secretary

                                           PHOTOMED ACQUISITION, INC.,
                                           a Delaware corporation

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title:    Secretary

                                           MRF, INC., a Missouri corporation

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title:    Secretary

                                           L.S. EXPORT, LTD., a
                                           company organized under the
                                           laws of the U.S. Virgin Islands

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title:    Treasurer

                                           LST LASER, S.A., a company organized
                                           under the laws of Costa Rica

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title:    Treasurer

                       [SIGNATURES CONTINUED ON NEXT PAGE]

                                       15
<PAGE>

                                           LASERSIGHT EUROPE GMBH, a company
                                           organized under the laws of Germany

                                           By: /s/ Gregory L. Wilson
                                              -------------------------
                                           Name:  Gregory L. Wilson
                                           Title: Managing Director

                                       16

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