Eligibility Guidelines for School-Based Vision ServicesBy: Carmen Willings
teachingvisuallyimpaired.com revised November 18, 2022 A student with a visual impairment is one whose vision, even with correction, adversely impacts a child's educational performance. Examples are children whose visual impairments may result from congenital (from time of birth) defects, eye diseases, or injuries to the eye. Learn more about IDEA guidelines related to vision. A student with a visual impairment is one whose vision, even with correction, adversely impacts a child's educational performance. Examples are children whose visual impairments may result from congenital defects, eye diseases, or injuries to the eye. The term "Visual Impairment" includes both low vision and blindness.
1. Blind refers to a child whose visual acuity is 20/200 or less in the better eye after correction or who has a limitation in the field of vision that subtends an angle of 20 degrees. Some children who are legally blind have useful vision and may read print. 2. Low Vision refers to a child whose visual acuity is better than 20/200 in the better eye after correction OR who has a limitation in the field of vision that adversely impacts educational progress. *Progressive visual disorders: Children, whose current visual acuity is not adversely impacting their educational progress, but who have a medically indicated expectation of visual deterioration may also be considered for vision impaired eligibility based on documentation of the visual deterioration from the child's optometrist or ophthalmologist. **Students who appear to be more visually impaired than one would suspect on the basis of their eye exam or students whose visual ability appear to be highly variable for no apparent reason may be suffering from damage to the visual pathway or visual cortex. When cerebral/cortical visual impairment or post trauma vision syndrome is suspected, there are several ways to detect damage to the visual cortex or visual pathway:
1. Visually Evoked Potential Mapping (VEP Map) detects the processing of visual stimuli by the visual cortex.
2. Computerized tomography (CT) scan and magnetic resonance imaging (MRI) indicate areas of destroyed brain structure. 3. Electroencephalogram (EEG) measures the electrical activity of the brain. Read More on These Pages...
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Overview of Assistive Technology VI AT Resources Non-Optical Low Vision Devices Video Magnifiers Video Magnifier Instruction Screen Enlargement & Readers Low/Med. Tech Tactual Devices Notetaker Instruction Braillewriter Repair Tactile Graphics Technology Braille Technology Auditory Access Devices Accessing Audio Books iPads as Instructional Tools Making iOS Device Accessible iOS Accessibility Resources VoiceOver Apps for VI Note Taking apps Apps for Accessing Books Identification Apps Navigation & Location Apps Braille Apps Magnifier Apps Sound Making Apps Cause & Effect Apps Vision Skills Apps Apps for Early Learning Read to Me Story Apps Apps for Communication Android Apps for VI sensory efficiency
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