3. (1) Any person, not being a registered medical practitioner, who performs eye surgery upon another, whether with or without the latter's consent, shall be punishable with imprisonment for a term which may extend to one year, and with fine which may extend to one thousand taka. (2) The term of imprisonment under sub-section (1) may extend-(a) to three years, if the offence results in partial blindness, and (b) to seven years , if the offence results in complete blindness.