Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
Search results
- Visual Attention Span(also: VAS, Visual Attention Window)
- The number of distinct visual elements that can be processed simultaneously in a single glance. Visual attention span is a cognitive capacity linked to reading ability — when reading, the eyes fixate on a word and the visual attention span determines how many letters can be…
- Visual Augmentation(also: Text Augmentation, Visual Enhancement)
- The addition of visual elements such as icons, images, sign language videos, or highlights to text to aid comprehension and reading support. Visual augmentation is a common reading support strategy across disability communities — for deaf and hard of hearing readers, it may…
- Visual Crowding(also: 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-contrast, or briefly viewed. Crowding jointly with limited visual span sets an…
- Visual Presentation(also: Text Presentation)
- The way text and content are visually rendered on screen or in print, encompassing typography, layout, color, spacing, and formatting choices. Visual presentation significantly affects readability and accessibility for all users but is especially critical for people with…
- Visual-Syntactic Text Formatting(also: VSTF)
- Visual-Syntactic Text Formatting (VSTF) is a content presentation method that formats text based on its syntactic structure, using indentation, line breaks, and visual grouping to align with the grammatical structure of sentences. Research has shown VSTF can improve online…
5 results.