A complex system of nerves and muscles enables the human eye to blink, gaze, and shift focus. The trochlear nerve is one of six cranial nerves that carry electrical impulses from the brain to the eye.

Eye twitching is an involuntary movement that can be harmless or signify a more serious condition, such as multiple sclerosis. If twitching occurs for more than a few days, it is important to speak ...

Treatment with a cholesterol-lowering statin drug may very occasionally cause double vision, drooping eyelids or weakness of the muscles that control eye movement, investigators report. Dr. F. W.