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Article Contents
Page 1: Introduction
Page 2: Blindness
Current page: Page 3: Low Vision
Types of Low Vision
Macular degeneration
Glaucoma
Diabetic retinopathy
Cataract
Screen Magnifiers and Page Zoom
High Contrast and Customized Colors
Page 4: Color-blindness
Types of Low Vision
While visual acuity of people with low vision varies widely, low vision is generally defined as a condition in which a person’s vision cannot be fully corrected by glasses and interferes with daily activities such as reading and driving. Low vision is more common among the elderly, but it can occur in at any age as a result of conditions such as macular degeneration, glaucoma, diabetic retinopathy, or cataracts. Each of these conditions affects a person’s vision in different ways; however, some general principles apply:
Important
The key principle of web accessibility for people with low vision is:
Perceivable: content that is small, does not enlarge well, or has low contrast may be difficult to perceive.
Macular degeneration
The macula is near the center of the retina, which is the area in the back of the eye. “Dry” macular degeneration occurs as the tissues of the macula thin out over time, resulting in a gradual loss of vision. “Wet” [...]
