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Blindness
Scope Note
Having no sight or such limited vision that hearing and touch are the chief means of perception and learning - legal blindness is usually defined as having central visual acuity of 20/200 or less in the better eye with correction or having a visual field no greater than 20 degrees
Used For
Blind
Blind children
Broader Term
Visual impairments
Related Term
Braille
Deaf blind
Low vision aids
Talking books
Vision
Visual acuity
Subject Category
220 Disabilities
Date Added
Jan 84