EXHIBIT 10.20

                                  AMENDMENT TO
                             KEY EMPLOYEE AGREEMENT
                                       AND
                       CONFIDENTIAL INFORMATION AGREEMENT


         THIS AGREEMENT, dated and effective as of October 1, 1996, among Liaqat
Khan ("Khan"),  Intelesys Corporation,  a Delaware corporation formerly known as
Dynasys/   Intelligent  Systems  Corporation   ("Intelesys"),   and  a  Delaware
corporation currently known as Nexar Technologies, Inc. ("Nexar") which owns all
of the issued and  outstanding  capital stock of  Intelesys,  amends (i) the Key
Employee  Agreement  entered  into on or about  August 1,  1995  (the  "Original
Employment  Agreement")  between  Intelesys  and Khan and (ii) the  Confidential
Information  Agreement  entered into on or about  August 1, 1995 (the  "Original
Confidentiality Agreement") between Intelesys and Khan.

         The parties hereto agree as follows:

         1. The text of Section  1.1 of the  Original  Employment  Agreement  is
amended to read in its entirety as follows:

         "You shall serve as Executive  Vice President of  Manufacturing  of the
         Company (or in such other executive  capacity as shall be designated by
         the Chairman of the Board of Directors or the President of the Company)
         and you shall  perform  the  duties  customarily  associated  with such
         capacity  from time to time and at such  place or  places  in  Northern
         California  as the Chairman of the Board of Directors or the  President
         of  the  Company  shall  designate  as  appropriate  and  necessary  in
         connection with such employment."

         2. 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."

         3. 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 attached hereto."







         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  October 1,
         1996, 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 One  Hundred  Fifty  Thousand
         Dollars  ($150,000)  per annum as of October 1, 1996 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)       One year base pay at highest prior level,

                           d)       One year  incentive  bonus at highest  prior
                                    level,

                           e)       One year 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,


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                           f)       $750,000 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
                                    California   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 is terminated by the Company (other than for Cause)
                  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 (g) (all payments set forth 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. 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
                  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)       $750,000  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,

                           c)       One year base pay at highest prior level,

                           d)       One year  incentive  bonus at highest  prior
                                    level, and


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                           e)       One year 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.

                  4. Termination For Cause: If your employment is terminated for
                  Cause (as defined in Section  2.4),  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,  1997  and
         thereafter for the term of the Agreement, payable quarterly."

         7. The text of the second paragraph of Section 5 of Exhibit A (entitled
"Expenses")  of the  Original  Employment  Agreement  is  amended to read in its
entirety as follows:

         "The Company will  provide you with a monthly  automobile  allowance of
         $1,000."

         8. The following new Section 8 of Exhibit A (entitled "Vesting of Stock
Options Upon IPO") is added to the Original Employment Agreement:

         "8. Vesting of Stock Options Upon IPO. All stock options held by you as
         of  February  28,  1997,   will  vest  50%  upon   consummation  of  an
         underwritten  registered  initial public offering ("IPO") of the common
         stock of the Company and in full one year after the closing of such IPO
         and immediately prior to a Change of Control."

         9.  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 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

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         suggested by any task assigned to me or any work  performed by me or on
         behalf of the Company."

         10.  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."

         11. All references herein and in the Original  Employment  Agreement to
the "Company" shall mean Nexar, rather than Intelesys. All references herein and
in the Original Employment Agreement to the Chairman of the Board of the Company
shall mean the Chairman of the Board of Nexar.  All  references  in the Original
Confidentiality  Agreement  to the  "Company"  shall mean  Nexar,  any  entities
directly or indirectly  owned or controlled by, or affiliated  with,  Nexar, and
any successors or assigns of the foregoing.

         12.  Any  notices  under  the  Original  Employment  Agreement  and the
Original  Confidentiality  Agreement  required  by  their  terms  to be given to
Intelesys shall instead be given to Nexar. 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: Albert J. Agbay, Chairman

                  If to Khan:               Liaqat Y. Khan
                                            c/o Nexar Technologies, Inc.
                                            30551 Huntwood Avenue
                                            Hayward, CA 94544

         13.  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:      Liaqat Khan


                              INTELESYS CORPORATION
                              (f/k/a Dynasys/Intelligent Systems Corporation)



                              By:      Albert J. Agbay, Chairman


                              NEXAR TECHNOLOGIES, INC.



                              By:      Albert J. Agbay, Chairman,
                                       Chief Executive Officer and President







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