Question

what are the aspects of visual impairment and blindness?

Answer 1

Visual impairment is a decreased ability to see to a degree, which causes problems .It is described as a best corrected visual acuity of worse than either 20/40 or 20/60. Blindness is used for complete or nearly complete vision loss. Visual impairment causes difficulties of peoples with normal daily activities such as driving, reading, socializing and walking. Students with non-correctable vision problems have visual impairments.

Partially Sighted: A visual impairment, which adversely affects an educational performance even when corrected to the extent possible.

Low Vision: If someone's vision is between 20/70-20/160 and cannot be corrected, the people has moderate to low vision.

Legally Blind: From 20/200-20/400 is legally blind with severe low vision. From 20/400-20/1000 is profound visual impairment and is very close to total blindness.

Totally Blind: The lack of light perception is known as total blindness or total visual impairment.

Blindness occurs in combination with such conditions as intellectual disability, autism spectrum disorders, cerebral palsy, hearing impairments and epilepsy. Blindness in combination with hearing loss is called as deaf blindness. An impairment in vision with correction, which adversely affects a child's educational performance. It includes both partial sight and blindness. This impairment refers to abnormality of the eyes, the optic nerve or the visual center for the brain resulting in decreased visual acuity.