Tips to Improve Night Blindness
Many older adults complain about being unable to see clearly while driving at night. Experts explain that night blindness, also known as nyctalopia, makes it difficult to see well in dim or dark settings as the person’s eyes are unable to adjust to changes in brightness or to detect lights. Driving at night with this condition is not only a problem but is dangerous, and is more common in seniors. The condition is caused when the iris, the colored part of the eye, and the retina aren’t working well together. The iris has muscles that widen or narrow the opening of the pupil to adjust how much light enters the eyes. The retina has light-detecting cones and rods, which manage vision in dim light. When the irises’ muscles don’t react well; pupils can dilate and let in too much light or remain too small and make it hard to see in dim light. A number of things can exacerbate night blindness including something we cannot control – old age. Dr. Isabel Deakins, an optometrist with Harvard-aff...