Eye diseases are conditions that affect any part of your eye, and include conditions that affect the structures immediately around your eyes. These conditions can be acute (meaning they develop quickly) or chronic (meaning they develop more slowly and last a long time).
Your eyeball itself is where most eye diseases happen, but it isnβt the only place. Eye diseases also include conditions that can affect your eye muscles, eye socket, eyelids, or the skin and muscles immediately around your eyes.