Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Cataracts(also: Cataract)
- A clouding of the eye's natural lens that causes blurry or hazy vision and increased sensitivity to glare. Cataracts are the leading cause of vision impairment worldwide and become increasingly common with age. People with cataracts may experience difficulty reading, reduced…
- Category 3 Blindness(also: ICD-10 H54 Category 3, WHO Category 3 Visual Impairment)
- A classification of severe visual impairment under the World Health Organization's ICD-10 coding for disorders of the visual system (H54). Category 3 covers blindness in which the better eye has presenting visual acuity worse than 1/60 (20/1200 Snellen) but can still perceive…
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