<prompt> To facilitate the screening of visual-acuity, WHO defines blindness as counting fingers at a distance of: September 2006 and September 20101 meter3 meters6 meters9 meters  <response>: Ans. B: 3 meters The WHO proposed a uniform criterion and defined blindness as visual acuity of less than 3 60 Smellen or its equivalent . In order to facilitate the screening of Visual acuity by non-specialized personnel, in the absence of appropriate vision chas, the WHO has now added the inability to count fingers in daylight at a distance of 3 meters to indicate less than 360 or its equivalent. 