Well, I have to say that it is normal for you to have dilated pupils. Dilate pupils are often caused by high blood pressure. When you are scared, your blood pressure can be very high, and then it can lead to high eye pressure in your eyes. In that way, it can affect your eyes, and then lead to dilate pupils. So that is way you have dilate pupils, when you are scared. So to treat it, you should calm down, and then it will be fine. Also, you should know that there are also many other factors, which can causes dilated pupils too, such as hyperventilation, muscle tensions, which are the most common causes to dilated pupils. Anyway, just be careful about them.