Yes, you can wear eye makeup to an eye exam, and it would not influence the result of the exam. Due to there are two main eye exam that are general eye exam, which is just checking how well your eyes are. And the other one is prescription eye exam, which could check how well your eyes are after the prescription. The staff would remove your makeup for you if the doctor feels it is necessary. But the doctor usually would only concentrate on your eyes instead of your face. The only thing would make you uncomfortable during the eye exam is your eyes would be watery from looking at the small letters and what they do. Perhaps it would break your eye makeup and make you look not that beautiful.