Amendment To Employment Agreement
                        ---------------------------------


         This amendment  ("Amendment")  is made as of April 1, 1996 between Asia
Care, Inc.  ("Employer")  and John L. Silverman  ("Employee") as an amendment to
the Employment  Agreement dated June 5, 1995 between  Employer and Employee (the
"Agreement").

         Whereas, Employee and Employer desire to amend the Agreement to clarify
the terms of Section 3.4(e) concerning the definition of "Good Reason";

         Now, therefore, it is agreed:

         1.  Section  3.4(e)(2)  is deleted in its  entirety  and the  following
Section 3.4(e)(2) is substituted for the original text:

                  " (2) the resignation by the Executive  within one (1) year of
                  one or both of the following:

                           (i)      a "Change of Control", as defined in Section
                  3.4(e)(2), and/or

                           (ii) the date the individual  who is Chief  Executive
                  Officer and  Chairman of the Board of IHS as of the  Effective
                  Date  or  the  individual  who is  President  of IHS as of the
                  Effective Date ceases to hold such position,

         provided in the case of either (i) or (ii) that the Executive gives the
         Company at least ninety (90) days prior written notice of his intent to
         resign  and the  effective  date of such  resignation  is at least  two
         hundred seventy (270) days after the event described in (i) or (ii).

         Notwithstanding  the  foregoing,  a termination  on account of a reason
         described in Subsection  3.4(e)(1),  shall be deemed not to be for Good
         Reason unless the Executive  (i) gives the Company the  opportunity  to
         cure  the  condition  that  purports  to be Good  Reason,  and (ii) the
         Company fails to cure that  condition  within sixty (60) days after the
         receipt of the Good Reason  Notice (or,  with respect to the failure to
         make any payment when due to the Executive,  within ten (10) days after
         the receipt of such notice).

                  For purposes of this Agreement, a "Change of Control" shall be
         deemed  to  occur  if  (i)   there   shall  be   consummated   (x)  any
         consolidation,  reorganization or merger of IHS in which IHS is not the
         continuing or surviving corporation or pursuant to

                                           1



         which  shares  of IHS'  common  stock  would be  converted  into  cash,
         securities or other  property,  other than a merger of IHS in which the
         holders of IHS' common stock  immediately  prior to the merger have the
         same   proportionate   ownership  of  common  stock  of  the  surviving
         corporation  immediately  after the  merger,  or (y) any  sale,  lease,
         exchange or other  transfer (in one  transaction or a series of related
         transactions)  of all, or  substantially  all, of the assets of IHS, or
         (ii) the  stockholders  of IHS shall  approve any plan or proposal  for
         liquidation or dissolution of IHS, or (iii) any person (as such term is
         used in Sections 13(d) and 14(d)(2) of the Exchange Act,  including any
         "group" (as defined in Section  13(d)(3)  of the  Exchange  Act) (other
         than the  Executive or any group  controlled by the  Executive))  shall
         become the beneficial owner (within the meaning of Rule 13d-3 under the
         Exchange  Act) of  twenty  percent  (20%)  or more of IHS'  outstanding
         common stock (other than pursuant to a plan or arrangement entered into
         by such person and IHS) and such person  discloses its intent to effect
         a change in the  control or  ownership  of IHS in any  filing  with the
         Securities and Exchange Commission, or (iv) within any twenty-four (24)
         month period  beginning on or after the Effective Date, the persons who
         were directors of IHS  immediately  before the beginning of such period
         (the  "Incumbent  Directors")  shall  cease (for any reason  other than
         death,  disability or  retirement) to constitute at least a majority of
         the Board or the board of  directors  of any  successor to IHS provided
         that,  any  director of IHS who was not a director as of the  Effective
         Date shall be deemed to be an Incumbent  Director if such  director was
         elected to the Board of IHS by, or on the recommendation of or with the
         approval of, at least two-thirds of the directors who then qualified as
         Incumbent  Directors  either  actually  or by prior  operation  of this
         Section 3.4(b)(iv) unless such election, recommendation or approval was
         the result of any  actual or  threatened  election  contest of the type
         contemplated by Regulation 14a-11 promulgated under the Exchange Act or
         any successor provision."

         2. All terms of the Agreement not modified herein, shall remain in full
force and effect.



                                        2

In witness  whereof,  the parties have  executed  this  amendment as of the date
above written.

ASIA CARE, INC.



By: /s/ Lawrence P. Cirka                         /s/ John L. Silverman
   -----------------------------                  ------------------------------
                                                  JOHN L. SILVERMAN




                                        3