Abstract:
Blindness is a physical disability that makes a person unable to use of sight. This is the most prominent sense for the human being. Visual impairments limiting one or more of the basic functions of the eye: visual acuity, dark adaptation, color vision, or peripheral vision. These may result from eye diseases; optic nerve diseases; visual path way diseases; occipital lobe diseases; ocular motility disorders; and other conditions.
Most of the blind people in the Developing Countries are deprived by the access to proper education, by lack of resources and cost of the equipment’s which are unable to reach. Negligence and the misconception of the society are also deprive their access to proper education.
Sense of Orientation and mobility is the most prominent need for the blind with in the habitable physical environment. They face such difficulties when orientate among the 'World of Sighted People'. The physical Environment almost shaped according to the normal sighted people. It creates more complex, unfamiliar or hostile environment to the blind users and they limited to the small familiar environment.
