Import exemption amendment affects ophthalmic blanks import notification, altering tariff table entry under customs powers. Amendment to Notification No. 11/97 Customs replaces the Table entry in column (6) against Serial No. 95 with '-' for imports of ophthalmic blanks for optical lenses, made by the Central Government under the power in sub section (1) of section 25 of the customs legislation as necessary in the public interest.