Glossary

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Non-Visual Reference Database(also: Non-Visual Cooking Database)

A proposed structured collection that maps common visual descriptions used in cooking and other domains to their non-visual equivalents using texture, sound, smell, time, and temperature descriptors. For example, mapping the visual instruction "cook until golden brown" to…

Tunnel Vision(also: Peripheral Vision Loss, PVL)

A visual impairment characterized by the loss of peripheral vision while central vision may remain intact, resulting in a narrow field of view as if looking through a tunnel. Tunnel vision can be caused by conditions such as retinitis pigmentosa, glaucoma, or stroke. It…

Usher Syndrome(also: Usher's Syndrome)

A genetic condition that is the most common cause of combined deafness and blindness (deafblindness). It is characterized by sensorineural hearing loss present from birth and progressive vision loss from retinitis pigmentosa, which typically begins in adolescence or young…

Visual Descriptor(also: Visual Cue, Visual Doneness Indicator)

A description in instructions or content that relies on visual appearance to convey information, such as "cook until golden brown," "the mixture should be translucent," or "form into patties." Visual descriptors are a significant accessibility barrier for blind and visually…

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…

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