EXHIBIT 1 TO FORM CB

8 SEPTEMBER 2004

               REVISED OFFER BY ESCALON MEDICAL CORP. ("ESCALON")
                    FOR ALL THE OUTSTANDING SHARE CAPITAL OF
                       DREW SCIENTIFIC GROUP PLC ("DREW")

     EXTENSION OF REVISED OFFER AND INTENTION TO COMPULSORILY ACQUIRE SHARES

On 9 August 2004 Atlantic Law, on behalf of Escalon, announced that the revised
Offer for all of the issued Drew Shares was extended to 1.00pm on Wednesday, 8
September 2004, to coincide with the proposed final date prior to delisting of
the Drew Shares with the United Kingdom Listing Authority and the proposed final
date prior to cancellation of trading of the Drew Shares with the London Stock
Exchange Plc.

Atlantic Law announces that, as at 1.00 p.m. on Wednesday, 8 September 2004,
acceptances of the revised Offer valid in all respects have been received in
respect of 82,356,189 Drew Shares, representing approximately 92.51 per cent. of
the existing issued ordinary share capital of Drew.

Atlantic Law, on behalf of Escalon, hereby extends the revised Offer to 1.00pm
on Wednesday, 22 September 2004 to allow for Drew Shareholders to accept the
revised Offer. The next closing date will be 1.00pm (London time) on Wednesday,
22 September 2004.

Once the revised Offer has closed, and pursuant to the terms of the revised
Offer, Escalon intends to use the procedures set out in sections 428 to 430F of
the Companies Act 1985 as amended to acquire compulsorily any remaining Drew
Shares.

Drew Shareholders who wish to accept the revised Offer, and who have not done
so, should complete their Form(s) of Acceptance, in accordance with the
instructions printed thereon, whether or not their Drew Shares are in CREST, and
return them, as soon as possible, and in any event so as to be received by post
or during normal business hours by hand to Capita IRG Plc at Corporate Actions,
PO Box 166, The Registry, 34 Beckenham Road, Beckenham, Kent BR3 4TH no later
than 1.00pm (London time) on 22 September 2004. Additional Forms of Acceptance
are available from Capita IRG Plc, by telephoning 0870 162 3100 (if calling from
within the UK) or +44 208 639 2157 (if calling from overseas).

Neither Escalon nor any person acting, or deemed to be acting, in concert with
Escalon, held any ordinary shares of Drew before the Offer Period or has
acquired or agreed to acquire any such shares during the course of the Offer
Period, other than through the acceptance of the Original Offer and the revised
Offer as described above. None of the acceptances relate to persons acting in
concert with Escalon.

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The Escalon Directors accept responsibility for the information contained in
this announcement, which is in accordance with the facts and does not omit
anything likely to affect the import of such information.

Definitions used in the revised Offer Document dated 1 July 2004 apply to this
announcement unless the context otherwise requires.

ENQUIRIES: ATLANTIC LAW
TELEPHONE: 0207 616 2888

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