Normal vision requires a moist healthy ocular surface. This was affected by several factors which include sufficient quality of tears, a normal composition of the tear film, normal lid closure, and regular blinking.
Aging and Your Eyes
Learn what is normal for aging eyes, what may be a sign of disease, and how to compensate for changes. Age sometimes brings changes that weaken your eyes, but there are things you can do to maintain lifelong eye health and minimize the impact of age-related vision loss on daily life.