Blindness - All A Seeing Person Must Know
Blindness is a state of being sightless or say an inability to see. World Health Organization - WHO (1972) describes blindness as the inability to count fingers at the distance of 3 meters in day-light after best possible spectacle correction in the better eye OR visual field less than 10° around the centre of fixation.
Blindness is of three TYPES:
Blindness is of three TYPES:
- Loss of visual acuity.
- Colour blindness: Inability to recognize colours, and
- Night blindness: Night vision is damaged.