Residual vision

The remaining visual ability of a person with a visual impairment, which may include partial acuity, limited visual field, or light perception. The vast majority of people classified as legally blind have some residual vision rather than total blindness. Assistive technology and environmental design that leverages residual vision — through magnification, enhanced contrast, or strategic lighting — can be more effective and empowering than solutions designed exclusively for total blindness, yet this population is often overlooked in accessibility research.