Blindness criteria in India?

Blindness criteria in India ?
a) Vision < 3/60
b) Vision < 6/60
c) Vision < 12/60
d) Vision < 18/60
Correct Answer - B
Ans. is ‘b’ i.e., Vision < 6/60
National programme for control of blindness (NPCB), India defines
blindness as visual acuity of < 6/60 in better eve with best possible
correction In contrast to WHO, which defines blindness as visual
acuity of < 3/60).