The main reason for the frequent involuntary blinking is that there are several conditions. 1. there may be an impingement problem, as the eyelashes flip inward and catch the eyeball, causing eye discomfort, so you will blink involuntarily to compensate for the discomfort. 2. there may be a dry eye, as the tear production is too little or of poor quality, causing the tear film to stay on the eye surface for too short a time, resulting in discomfort, so you will blink to make the tear production more, compensating for the discomfort. 3. The first thing you need to do is to blink to compensate for the discomfort. 3, there may be allergies, generally allergic conjunctivitis will have mild itching, will be due to discomfort and compensatory blinking. 4, may be the fatigue caused by excessive eye use, eyes usually feel sore, swollen, uncomfortable, will also compensatory blinking to improve eye discomfort symptoms.