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.

Sixth nerve palsy is a nerve disorder. When your sixth nerve isn't working properly, it causes problems with the movement of your eye. Sixth nerve palsy is also known as lateral rectus palsy. Palsy is ...

Add Yahoo as a preferred source to see more of our stories on Google. Though eyelid twitching (technically called myokymia) can feel disconcerting, the good news is that it’s typically fleeting and ...

Hypotropia is when one eye tilts downward. It’s often caused by problems with the muscles around your eyes or the nerves that control them. Hypotropia falls into a group of conditions called ...

Find out why your eyes may be fluttering so much. One common lifestyle trigger is responsible.

Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...

Surgeries for thyroid eye disease include orbital decompression (to relieve swelling), strabismus (to repair eye muscles and correct eye alignment), and eyelid retraction correction (to restore eyelid ...

Medically reviewed by Christine L. Larsen, MD Key Takeaways Medications, trauma, and medical conditions can cause miosis or ...