Glossary
Searchable terminology from accessibility, web standards, and related fields.
27 results found in Low Vision.
- Proliferative Diabetic Retinopathy (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, dar…
- Restricted Field of View (Tunnel Vision, Peripheral Vision Loss, Visual Field Loss)
- A condition in which the area of the visual environment that a person can see at any given moment is significantly reduced, often described as looking through a tunnel or a narrow tube. Restricted fie…
- Skilled Vision (Vernacular Vision, Professional Vision)
- Skilled vision is a concept from visual culture and anthropology that describes the process of learning to see and interpret visual information in specialized ways within a particular community of pra…
- Vision Multiplexing (Visual Multiplexing)
- An optical engineering concept for low-vision aids that involves presenting multiple views or visual channels simultaneously to compensate for reduced visual function. In the context of assistive tech…
- Visual Aberration (Optical Aberration, Refractive Error)
- A deviation from ideal optical performance in the eye that causes images to appear blurred, distorted, or otherwise degraded on the retina. Visual aberrations include both lower-order aberrations (suc…
- Visual Crowding (Crowding)
- A perceptual phenomenon in which the presence of nearby flanking characters or objects makes it harder to recognise a target character, especially in peripheral vision or when the target is small, low…
- Visual Profile (Visual Function Profile)
- A visual profile is a comprehensive characterization of an individual's visual capabilities across multiple dimensions, typically including visual acuity, contrast sensitivity, visual field, and color…