Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Proliferative Diabetic Retinopathy(also: PDR)
- An advanced stage of diabetic retinopathy in which abnormal new blood vessels grow on the retina, causing bleeding, scarring, and progressive vision loss that can include blurred vision, floaters, dark spots, and partial or complete blindness. A major cause of acquired low…
- Pupil Diameter(also: Pupil Size, Aperture Size)
- The width of the opening in the iris through which light enters the eye, typically ranging from about 2mm in bright light to 8mm in darkness. Pupil diameter significantly affects visual quality because it determines how much of the eye's optical aberrations influence the image…
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