<prompt> According to WHO, blindness there is inability to count fingers at a distance of:1 meters2 meters3 metres6 metres  <response>: WHO defines blindness as visual acuity of 360 better eye with best possible correction National programme for control of blindness India defines Blindness as visual acuity of 360 in better eye with best possible correction WHO categories of Visual Impairment: Low vision 618 - 660 Economic blindness 660 - 360 - work vision Social blindness 360 - 160 - walk vision Manifest blindness 160 - Perception of Light Absolute blindness Perception of Light -ve, unspecified causes 