Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Visible Disability(also: Apparent Disability)
- A disability that is readily apparent to outside observers through physical characteristics, mobility aids, or other visible indicators. Examples include amputations, paralysis, use of a wheelchair, or conditions that affect gait or posture. Visible disabilities shape social…
- Visual Field Loss(also: Visual Field Deficit, VFL, Field Loss)
- A reduction in the area of vision that a person can see without moving their eyes or head. Visual field loss can affect any portion of the visual field — central, peripheral, or specific quadrants — and can result from conditions affecting the eyes (glaucoma, retinal detachment)…
- Visual Impairment(also: Vision Impairment, Low Vision, Sight Loss)
- A reduction in the ability to see that cannot be fully corrected with standard glasses, contact lenses, or medical treatment. Visual impairments range from low vision (partial sight) to total blindness and include conditions like macular degeneration, glaucoma, diabetic…
- Vitiligo
- A chronic skin condition in which patches of skin lose their pigment, resulting in irregular white or light areas on the body. Vitiligo can affect people of any skin tone but is more visually apparent on darker skin. The World Health Organization includes vitiligo under the…
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