A blink of an eye seems natural and instantaneous, but is it? Without a functioning eyelid, the eye can become dry, irritated and eventually lose the ability to see clearly. The researchers studied ...

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.

Many people experience vision problems in MS. Learn about common eye symptoms, including eye pain, blurry vision, and double vision.

Humans and other mammals cycle through distinct sleep phases. One of them is easily recognized by the darting motion of the ...

NEW YORK (Reuters Health) - Treatment with a cholesterol-lowering "statin" drug may very occasionally cause double-vision, eyelid-droop, or weakness of the muscles that control eye movement, ...