Blindness is the inability to see anything, even light. If you’re partially blind, you have limited vision. For example, you may have blurry vision or the inability to distinguish the shapes of objects. Complete blindness means that you can’t see at all and are in total darkness. Legal blindness refers to vision that’s highly compromised. What a person with healthy eyes can see from 200 feet away a legally blind person can see only from 20 feet away.
Seek medical attention right away if you suddenly lose the ability to see. Have someone bring you to the emergency room for treatment. Don’t wait for your vision to return. Depending on the cause of your blindness, immediate treatment may increase your chances of restoring your vision. Treatment may involve surgery or medication.