Ophthalmology is a branch of medicine that deals with the diagnosis and treatment of eye disorders. An ophthalmologist is a physician who specializes in eye care.
Ophthalmology is a branch of medicine that deals with the diagnosis and treatment of eye disorders. An ophthalmologist is a physician who specializes in eye care.
Mild twitching of the eyelid is a common phenomenon. Although these involuntary contractions of muscles are annoying, they are almost always temporary and completely harmless. The medical name for this kind of twitching is ocular myokymia. It is quite common and most often associated with fatigue. When your eye is twitching, it is not visible to anyone else.
Acuity is the measure of the eye's ability to distinguish the smallest identifiable letter or symbol, its details, and its shape, usually at a distance of 20 feet. This measurement is usually given in a fraction. The top number refers to the testing distance measured in feet and the bottom number is the distance from which a normal eye should see the letter or shape. So, the perfect vision is 20/20. If your vision is 20/60, that means what you can see at a distance of 20 feet, someone with perfect vision can see at a distance of 60 feet.
You are legally blind when the best corrected central acuity is less than 20/200 (perfect visual acuity is 20/20) in your better eye, or your side vision is narrowed to 20 degrees or less in your better eye. Even if you are legally blind, you may still have some useful vision. If you are legally blind, you may qualify for certain government benefits.