###Human: Is it normal for the eyes to blink when I move my jaws? ###Assistant: Hello. The condition that you are describing here closely resembles a condition called Marcus gunn jaw winking. This causes a drooping of the affected eyelid with such movements of the eyelids on jaw movements. The cause for such movements is due to various factors, the nerve which supplies the facial muscles erroneous supplies the eyelid muscles, while in normal situations these are distinct and do not supply both these muscles together. The treatment for such a condition is surgical and would need the expertise of an oculoplastic surgeon. This would be available in most eye hospitals. Although, the success rates are variable and you may need more than one surgery in the long run.