The symptoms and possible related eye conditions/diseases in this section are for general reference only, and do not contain all visual symptoms or all possible related conditions or diseases. If you have any unusual vision symptoms, speak with your ophthalmologist (Eye M.D.).
A shadow or dark curtain in vision may be associated with:
It's important to remember that many people do not know they have eye disease because there are often no warning signs or symptoms, or they assume that poor sight is a natural part of growing older. Early detection and treatment of eye problems is the best way to keep your healthy vision throughout your life. In many cases, blindness and vision loss are preventable.
The Academy recommends that adults with no signs or risk factors for eye disease get a baseline eye disease screening at age 40. For individuals at any age with symptoms of or at risk for eye disease, the Academy recommends that individuals see their ophthalmologist to determine how frequently their eye should be examined.