Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Gaze Tracking(also: Eye Tracking, Eye Gaze Tracking)
- Technology that measures and records eye movements to determine where a person is looking, for how long, and in what pattern. In low-vision research and rehabilitation, gaze tracking can reveal visual strategies such as fixation patterns, saccade paths, and preferred retinal…
- Glare(also: Visual Glare)
- Excessive brightness or reflections from surfaces or light sources that cause visual discomfort, reduce visibility, or impair the ability to see clearly. Glare is a significant accessibility barrier for people with low vision and light sensitivity. In musical performance…
- Glaucoma
- A group of eye diseases that damage the optic nerve, usually caused by abnormally high intraocular pressure. It is one of the leading causes of irreversible blindness worldwide, affecting over 80 million people. Glaucoma typically causes gradual peripheral vision loss that may…
- Glaucoma
- A group of eye conditions that damage the optic nerve, typically associated with elevated intraocular pressure. Glaucoma is a leading cause of irreversible blindness worldwide. It usually causes gradual loss of peripheral vision first, which can progress to tunnel vision and…
- Goldmann Perimetry(also: Goldmann Visual Field Test, Kinetic Perimetry)
- Goldmann perimetry is a clinical technique for mapping the visual field — the total area a person can see while fixating on a central point. The test uses a moving stimulus of controlled size and brightness projected onto a white hemispherical bowl, with the examiner tracking…
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