Low Vision
What Is Low Vision?
Low vision refers to a level of visual impairment that cannot be fully corrected with standard glasses, contact lenses, medication, or surgery. Unlike complete blindness, individuals with low vision retain some usable sight, though it may be severely compromised. This might include blurred vision, reduced field of view, or difficulty in detecting contrast or detail.
Common Causes of Low Vision
Low vision may result from congenital conditions, injury, or progressive diseases. Age-related disorders like macular degeneration, glaucoma, and diabetic retinopathy are leading causes, especially among older adults.
Challenges Faced by People With Low Vision
Daily activities—such as reading, identifying people, navigating unfamiliar spaces, or distinguishing colors—often become difficult. This can lead to reduced independence and increased frustration. Emotional impacts, including isolation or anxiety, are also common.
Legal Context and Disability Rights
Low vision is recognized as a disability under laws such as the ADA. Covered entities must provide reasonable accommodations: employers may need to offer screen magnifiers or adaptive tools, public services must be accessible, and businesses must ensure equitable service.
Assistive Tools and Vision Rehabilitation
Technologies like screen readers (e.g., NVDA, JAWS), screen magnifiers, high-contrast settings, and accessible apps support users with low vision. Vision rehabilitation services teach adaptive techniques and provide emotional and practical support.
Web Accessibility Considerations
Common barriers for users with low vision include poor color contrast, small or non-resizable fonts, overcrowded layouts, and vague link labels. Accessible websites use semantic HTML and ARIA roles, adjustable font sizes, sufficient contrast ratios (WCAG recommends at least 4.5:1), and clearly visible interactive elements. Offering user-controlled display settings—such as dark mode or adjustable text—is especially helpful.
Raising Awareness
Public education efforts and inclusive design advocacy help foster understanding and reduce stigma. Awareness also leads to better policy, tools, and infrastructure for people with low vision.