Excessive Blinking Might Be Irritating, but It's Rarely Caused by a Serious Problem. When It Is, It's Part of a Neurologic Syndrome, and There Are Usually...
Excessive blinking might be irritating, but it's rarely caused by a serious problem. When it is, it's part of a neurologic syndrome, and there are usually other neurologic symptoms. Blinking lubricates and cleans your eyes by spreading your tears over its outer surface.
What happens if you push your eye too hard?
Rubbing too hard or too frequently might damage the lens of your eye or the cornea. This could result in vision impairment or an infection that needs medical attention.
Excessive blinking can be caused by problems with the eyelids or anterior segment (front surface of the eye), habitual tics, refractive error (need for glasses), intermittent exotropia or turning out of the eye, the environment (changes in temperature or humidity, bright lights, or pain), and stress.