Why do your eye blink itself?

Answer 1

The medical term for this phenomenom is blepharospasm, and it is any abnormal tic or twitch of the eyelid. It normally refers to benign essential blepharospasm, a neurological movement disorder involving involuntary and sustained muscle contractions of the muscles around the eyes. Benign means the condition is not life threatening. The cause is unknown, but fatigue, stress, or an irritant are possible contributing factors. Some drugs can induce blepharospasm, such as those used to treat Parkinson's disease, as well as sensitivity to hormone treatments, including Estrogen replacement therapy for women going through Menopause. Blepharospasm can also be a symptom of acute withdrawal from benzodiazepine dependence. In addition to blepharospasm being a benzodiazepine withdrawal symptom, prolonged use of benzodiazepines can induce blepharospasm and is a known risk factor for the development of blepharospasm.

Answer 2

Blinking helps to keep the eyes moist by spreading tears evenly across the surface. It also helps to remove any dust or debris that may have landed on the eye. This reflexive action is controlled by the brain and occurs automatically without conscious effort.

Answer 3

to keep them moist.