EXHIBIT 10.16

                                  AMENDMENT TO
                             KEY EMPLOYEE AGREEMENT
                                       AND
                       CONFIDENTIAL INFORMATION AGREEMENT


         THIS  AGREEMENT,  dated and  effective as of February  28, 1997,  among
Albert J. Agbay  ("Agbay") and Nexar  Technologies,  Inc. (f/k/a Dynasys Systems
Corporation),  a  Delaware  corporation  (the  "Company"),  amends  (i)  the Key
Employee  Agreement  entered  into on or about  April  1,  1995  (the  "Original
Employment  Agreement")  between the Company and Agbay and (ii) the Confidential
Information  Agreement  entered  into on or about  April 1, 1995 (the  "Original
Confidentiality Agreement") between the Company and Agbay.

         The parties hereto agree as follows:

         1. The text of  Section  2.1  (entitled  "Term of  Employment")  of the
Original Employment Agreement is amended to read in its entirety as follows:

         "The  initial term of this  Agreement  shall be for the period of years
         set forth on Exhibit A annexed  hereto.  Unless  either  party  chooses
         otherwise by notice to the other given prior to the  expiration of each
         such contract year, the Agreement  automatically  extends at the end of
         each year for an additional  year throughout the term of the Agreement.
         Your  employment  with the  Company  may be  terminated  as provided in
         Sections 2.2 or 2.3."

         2. The text of Section 2.2(d) of the Original  Employment  Agreement is
amended to read in its entirety as follows:

         "(d) at any time without Cause, provided the Company shall be obligated
         to pay you the applicable severance compensation and other benefits set
         forth on Exhibit A hereto."

         3. The text of Section  2.4 of the  Original  Employment  Agreement  is
amended to read in its entirety as follows:

         " "Cause" for the  purposes of this  Agreement  shall mean (i) fraud or
         embezzlement involving assets of the Company, its customers,  suppliers
         or affiliates; (ii) your conviction of a criminal felony offense; (iii)
         the willful  material  breach or habitual  neglect of your  obligations
         under this  Agreement or your duties as an employee of the Company;  or
         (iv) your willful failure to follow lawful  material  directives of the
         Board of  Directors.  The  existence of Cause for  termination  of your
         employment by the Company shall be subject,  upon the written  election
         by you or the Company,  to binding arbitration as provided in Section 9
         hereof. The cost of arbitration,  exclusive of the cost of each party's
         legal representation  (which, except as hereinafter otherwise provided,
         shall be borne by the party  incurring the expense),  shall be borne by
         the instigating party;  provided,  however, that the arbitrators' award
         may require either






         party  to  reimburse  the  other  for  the  reasonable  cost  of  legal
         representation in the arbitration proceedings.

                  Further, any dispute, controversy, or claim arising out of, in
         connection  with or in relation to this  definition of "Cause" shall be
         settled by  arbitration  as provided in Section 9 hereof.  Any award or
         determination shall be final, binding, and conclusive upon the parties,
         and  a  judgement   rendered   may  be  entered  in  any  court  having
         jurisdiction thereof."

         4. The text of Section 1 of Exhibit A (entitled "Term") to the Original
Employment Agreement is amended to read in its entirety as follows:

         "The term of the  Agreement  to which  this  Exhibit A is  annexed  and
         incorporated shall be for five (5) years,  renewing  automatically each
         year  pursuant to Section  2.1 of the  Agreement,  commencing  March 1,
         1997, unless terminated prior thereto in accordance with Section 2.2 or
         2.3 of the Agreement."

         5. The text of subparagraphs (a) and (c) (subparagraph (b) remaining in
full force and  effect) of Section 2 of Exhibit A (entitled  "Compensation")  to
the Original Employment  Agreement are each amended to read in their entirety as
follows:

         "(a) Base  Salary.  Your  Base  Salary is Two  Hundred  Fifty  Thousand
         Dollars  ($250,000)  per annum as of April 1, 1997,  and thereafter for
         the term of the Agreement,  to be paid in accordance with the Company's
         payroll  policies and subject to increases  thereafter as determined in
         good faith by the  Company's  Board of Directors  (or a duly  appointed
         Compensation Committee thereof)."

         "(c)     Severance Package Pursuant to Section 2.2(d) of the Agreement:

                  1. Termination Without Cause after Change in Control: If there
                  occurs  a Change  of  Control  of the  Company  (for  purposes
                  hereof,  "Change of Control"  is defined as any merger  (other
                  than a merger with a subsidiary or in which the Company is the
                  survivor and "acquiror"),  a sale of substantially  all assets
                  or  similar  change  in  control  transaction   involving  the
                  Company) at any time, and your employment is terminated (i) by
                  the  Company  for any  reason  other than Cause or (ii) by you
                  after a reduction in either  responsibilities or pay or change
                  in location, you will receive the following:

                           a)       Full   immediate   vesting  of  any  issued,
                                    unvested stock options,

                           b)       Full payment of any accrued,  unpaid salary,
                                    bonus or benefit payments,

                           c)       Three years base pay at highest prior level,

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                           d)       Three years incentive bonus at highest prior
                                    level,

                           e)       Three   years  of  full   benefits   package
                                    including   health,   disability   and  life
                                    insurance,   full   contributions   to   all
                                    qualified and  non-qualified  retirement and
                                    pension  plans or  (then)  current  value of
                                    same in  cash if  terms  of  plans  preclude
                                    participation,   but  only  to  the   extent
                                    similar benefits are not received in another
                                    position,

                           f)       $2,250,000 cash, and

                           g)       In  the  event  that  your   employment   is
                                    terminated  pursuant  to this item 1 and the
                                    excise tax  imposed  by Section  4999 of the
                                    Internal  Revenue  Service Code (the "Code")
                                    (or any  successor  penalty  or  excise  tax
                                    subsequently  imposed by law) applies to any
                                    payments  under  this item 1, an  additional
                                    amount  shall be paid by the  Company to you
                                    such  that the  aggregate  after-tax  amount
                                    that you shall  receive  under  this item 1,
                                    shall  have a  present  value  equal  to the
                                    aggregate  after-tax  amount  that you would
                                    have  received  and retained had such excise
                                    tax not  applied to you.  For this  purpose,
                                    you shall be assumed to be subject to tax in
                                    each year relevant to the computation at the
                                    then maximum applicable combined Federal and
                                    Massachusetts   income  tax  rate,  and  the
                                    determination   of  the  present   value  of
                                    payments  to you  shall  be made  consistent
                                    with the  principles  of Section 280G of the
                                    Code.

                  2. Termination Without Cause Absent Change in Control: If your
                  employment  as Chief  Executive  Officer is  terminated by the
                  Company  (other  than for  Cause as  defined  below) or by you
                  after a reduction in either  responsibilities or pay or change
                  in location,  you will receive all of the items listed in item
                  1 above, except (f) and (g). In lieu of item (f), you shall be
                  entitled to a minimum (the "Minimum Amount") of (i) $1,000,000
                  if you are  terminated  on or prior to December 31,  1997,  or
                  (ii)  $1,500,000 if you are  terminated on or after January 1,
                  1998, subject in either case to increase as follows:

                           (x)      If  the  Company  achieves  $150,000,000  in
                                    total  revenues  in any fiscal year prior to
                                    your  termination,  you shall be entitled to
                                    $3,000,000; and

                           (y)      if (x) is not achieved,  you shall receive a
                                    sum equal to (but not greater, in any event,
                                    than  $3,000,000)  the  applicable   Minimum
                                    Amount plus either (i) if the Minimum Amount
                                    is  $1,000,000,   an  amount  equal  to  the
                                    product of $2,000,000 multiplied by the

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                                    quotient  of (A) the  amount  by  which  the
                                    Company's   total   revenues  for  the  four
                                    previous  completed  fiscal  quarters of the
                                    Company   prior   to  the   date   of   your
                                    termination exceeds $70,000,000,  divided by
                                    (B)  $80,000,000,  or  (ii)  if the  Minimum
                                    Amount is $1,500,000, an amount equal to the
                                    product  of  $1,500,000  multiplied  by  the
                                    quotient  of (A) the  amount  by  which  the
                                    Company's   total   revenues  for  the  four
                                    previous  completed  fiscal  quarters of the
                                    Company   prior   to  the   date   of   your
                                    termination exceeds $70,000,000,  divided by
                                    (B) $80,000,000.

                           In addition, if your termination occurs after January
                  1, 2000, and the remaining  term of your contract  immediately
                  prior to your termination is more than three years, in lieu of
                  (c) and (d) of item 1 you  shall  receive  an  amount  of cash
                  equal to (at the highest prior levels) the amount of both your
                  base pay and incentive bonus which would be paid out over such
                  remaining period of time.

                           All  payments set forth above in this item 2 shall be
                  guaranteed by Palomar Medical  Technologies,  Inc. ("Palomar")
                  for as long as Palomar and its subsidiaries own 50% or more of
                  the voting power of the capital stock of the Company.

                  3.  Resignation  by Agbay:  If you resign in the  absence of a
                  reduction  in  either  responsibilities  or pay or  change  in
                  location,  you will be entitled to receive the following  (all
                  payments  set  forth  in this  item 3 shall be  guaranteed  by
                  Palomar for as long as Palomar and its subsidiaries own 50% or
                  more of the voting power of the capital stock of the Company):

                           a)       Full payment of any accrued,  unpaid salary,
                                    bonus or benefit payments,

                           b)       Eighteen months of base pay at highest prior
                                    level,

                           c)       Eighteen   months  of  incentive   bonus  at
                                    highest prior level,

                           d)       Eighteen  months  of full  benefits  package
                                    including   health,   disability   and  life
                                    insurance,   full   contributions   to   all
                                    qualified and  non-qualified  retirement and
                                    pension  plans or  (then)  current  value of
                                    same in  cash if  terms  of  plans  preclude
                                    participation,   but  only  to  the   extent
                                    similar benefits are not received in another
                                    position, and

                           e)       $1,000,000    cash,   but   only   if   your
                                    resignation is on or after January 1, 2000.

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                  4. Expiration of Employment Agreement:  Upon the expiration of
                  this Agreement (or successor agreement),  you will be entitled
                  to receive the following  (all payments set forth in this item
                  4 shall be  guaranteed  by Palomar  for as long as Palomar and
                  its  subsidiaries  own 50% or more of the voting  power of the
                  capital stock of the Company):

                           a)       Full payment of any accrued,  unpaid salary,
                                    bonus or benefit payments,

                           b)       Eighteen months of base pay at highest prior
                                    level,

                           c)       Eighteen   months  of  incentive   bonus  at
                                    highest prior level,

                           d)       Eighteen  months  of full  benefits  package
                                    including   health,   disability   and  life
                                    insurance,   full   contributions   to   all
                                    qualified and  non-qualified  retirement and
                                    pension  plans or  (then)  current  value of
                                    same in  cash if  terms  of  plans  preclude
                                    participation,   but  only  to  the   extent
                                    similar benefits are not received in another
                                    position, and

                           e)       $2,250,000 cash, but only if the Company has
                                    achieved   cumulative   total   revenues  of
                                    $150,000,000  for the period  commencing  on
                                    January 1, 1997 to the date of expiration.

                  5.   Termination  For  Cause:  If  your  employment  as  Chief
                  Executive  Officer  is  terminated  for  Cause,  you  will  be
                  entitled only to full payment of any accrued,  unpaid  salary,
                  bonus and benefit  payments and  retention of any fully vested
                  stock options and other benefits.

         6. The following new  subparagraph (d) is added to Section 2 of Exhibit
A (entitled "Compensation") to the Original Employment Agreement:

         "(d) Per Unit Sold  Bonus.  In  addition  to   the   Bonus   determined
         pursuant to  subparagraph  (b) above, an amount equal to the product of
         $2.00  multiplied  by the  number  of  personal  computers  sold by the
         Company  (subject  to  reduction  for  returns,  credits,  set-offs and
         allowances)  during  the  period  commencing  on  April  1,  1996,  and
         thereafter for the term of the Agreement, payable quarterly."

         7.  Section 3.2 of the  Original  Confidentiality  Agreement  is hereby
amended to read in its entirety as follows:

         "For  purposes  of  this   Agreement,   "Inventions"   shall  mean  all
         discoveries, processes, designs, methods, works, technologies, devices,
         or improvements in any of the foregoing or other ideas,  whether or not
         patentable or copyrightable, or reduced to

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         practice, made, conceived,  authored or developed by me (whether solely
         or jointly with  others)  during the period of my  employment  with the
         Company,  or within one year thereafter,  which relate in any manner to
         the actual or demonstrably anticipated business,  products, or research
         and development of the Company,  or result from or are suggested by any
         task  assigned  to me or any work  performed  by me or on behalf of the
         Company."

         8.  Section 3.3 of the  Original  Confidentiality  Agreement  is hereby
amended to read in its entirety as follows:

         "Any discovery,  process, design, method, technique,  work, technology,
         device, or improvement in any of the foregoing or other ideas,  whether
         or not  patentable  or  copyrightable  and  whether  or not  reduced to
         practice,  made or  conceived  by me  (whether  solely or jointly  with
         others)  which I develop  entirely  on my own time not using any of the
         Company's equipment,  supplies, facilities, or trade secret information
         ("Personal  Invention") is excluded from this  Agreement  provided such
         Personal  Invention  (i) does not relate to the actual or  demonstrably
         anticipated  business,  products,  or research and  development  of the
         Company,  and (ii) does not result,  directly or  indirectly,  from any
         work performed by me or on behalf of the Company."

         9. The respective  addresses for notices under the Original  Employment
Agreement and the Original Confidentiality Agreement shall be as follows:

                  If to Nexar:              Nexar Technologies, Inc.
                                            182 Turnpike Road
                                            Westborough, MA 01581
                                            Attention: Gerald Y. Hattori

                  If to Agbay:              Albert J. Agbay
                                            c/o Nexar Technologies, Inc.
                                            182 Turnpike Road
                                            Westborough, MA 01581

         10.  Except to the extent  modified  hereby,  all terms of the Original
Employment  Agreement  and  the  Original  Confidentiality  Agreement  shall  be
unaffected hereby and shall continue in full force and effect.


                                    * * * * *

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         EXECUTED as of the date first above written.





                          By:      Albert J. Agbay

                          NEXAR TECHNOLOGIES, INC.



                          By:      Gerald Y. Hattori
                                   Vice President and Chief Financial Officer





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