As we age the natural lens in the middle of the eye will eventually become more cloudy, this is known as a cataract. With the cloudy discoloration present in a cataract, the eye’s natural lens begins to act like a filter causing a decrease in vision, contrast and the overall amount of light entering into the eye. In turn, everyday activities of daily living such as moving about the house, reading, and cooking can become more difficult. Studies have shown those with Alzheimer’s Disease also have difficulty perceiving contrast.
Recently several studies have been released showing the benefits of cataract surgery for Alzheimer’s patients. Reports show with better vision comes better sleep patterns, less depression, and a better overall mood. Patients studied had mild dementia and at least one significant cataract. A neuropsychologist evaluated patients at their 1 month and 3 month post-operative visits. Mood, behavior, sleep patterns, the ability to function independently, and cognitive abilities were assessed. Results showed an overall increase in mood, recognition, ability to function independently, and sleep patterns.
Dr Alan Lerner says, “If you can’t perceive something, it is hard to remember it.” A simple statement that is so true. The overall conclusion of the study showed that by improving the ability to perceive, cataract surgery can give an Alzheimer’s patient a better quality of life.
