<prompt> The WHO definition for blindness is the inability of counting fingers in daylight at a minimum distance of -3 feet6 feet3 metres6 metres  <response>: WHO definition blindness - inability to count fingers in day light at a distance of 3 metres or visual acuity less than 3 60 or its equivalent. Ref- Park;s textbook of Preventive and social medicine 23rd edition. . 