For people with these impairments, things like complex or inconsistent displays or word choice can make using computers more difficult. Specific patterns of light or sound can trigger epileptic seizures in some susceptible individuals. The most common problem people face as they age is the natural deterioration of eyesight. By age 65, most people have lost at least some of their ability to focus, resolve images, distinguish colors and adapt to changes in light. As part of the natural aging process and longevity, the need for contrast increases because of discoloration in the eye fluids and lens.
Most people have a loss in color perception that accompanies their dimmed vision.
With longevity, people often experience other degenerative effects as well. Varying degrees of hearing loss are common, as is difficulty with small motor coordination, often due to arthritis or stiffening of the joints. All rights reserved. Terms of use . Contact Us .