tender for annual rate contract for supply of spectacles to school children and elderly persons (specifically for presbyopia) under national program of control of blindness (npcob) at district hospital kulgam , supply of spectacles national program of control of blindness (npcob) , for school children:- frame sizes: small, medium, and large to accommodate different age groups lens power: range of +/- powers as per individual eye examination reports , for elderly persons:- frame sizes: small, medium, and large to suit different facial profiles. lens power: varying near-vision correction powers ranging from +1.00d to +3.50d, as per individual eye examination reports