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Did you know that Alzheimer’s disease can affect vision even if there is nothing physically wrong with the eyes? Sometimes residents do things that seem odd to us, but these actions can be explained by changes going on in the brain. Let’s look at a few of the most common vision changes in Alzheimer’s disease:
Color & Contrast Perception
This makes it difficult for a person to see an object if it’s against a background of the same color. A resident may have trouble recognizing a white toilet if the walls or floor in the bathroom are also white. They may not be able to see yellow cake if served on a yellow plate. Food can also look less appetizing because of distortions in color perception. Perhaps they’ll even have difficulty seeing you if your clothing is the same color as the wall behind you.
Reduced Field of Vision
People may have trouble seeing off to the side. If you approach them from the side instead of from the front, they’ll be startled. This also results in people bumping into objects, and it can increase the possibility of injuries.
It becomes more difficult to see moving objects. This is one reason why people with Alzheimer’s disease have difficulty watching TV. It can also result in frustration with recreational activities that involve a lot of movement.
This results in people having a hard time judging distance as well as determining if something is a real object or a picture. A resident may try to pick a flower off of a flowered fabric. They may have trouble reaching for an item such as a coffee cup. Sitting down on a chair or walking down stairs becomes challenging. They may perceive that a dark square of carpet is a hole in the floor. Problems with depth perception can predispose people to falls and other injuries.