What diseases cause blindness?
A visual impairment is any visual condition that impacts an
individual’s ability to successfully complete the activities of everyday life.
Students with visual impairments are infants, toddlers, children and youths who
experience impairments of the visual system that impact their ability to learn.
There are three classification systems for individuals with visual impairment
that are used by education professionals. To be declared legally blind, an
individual must have visual acuity of 20/200 or less, or have a field of vision
restricted to 20 degrees or less at the widest point. However, this federal
classification system is used primarily to determine eligibility for adult
agency services.
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