What is a common effect of aging on the visual system?

As individuals age, one of the most noticeable effects on the visual system is a decline in visual acuity, which refers to the clarity or sharpness of vision. This decline can result from several factors, including changes in the lens of the eye, such as the development of cataracts or presbyopia, where the lens becomes less flexible, making it difficult to focus on close objects. Additionally, aging can lead to a decrease in the number of photoreceptors in the retina and changes in the overall health of the eye, which can further impair sharpness of vision.

While improvements in color vision, enhanced depth perception, and increased tear production are generally not associated with aging, the decline in visual acuity is a more common and expected change. These age-related changes can significantly affect daily activities and quality of life, making awareness and regular eye examinations essential for managing visual health in older adults.