Well, generally speaking, there are many side effects of birth control pills. For example, it can lead to the dry eyes. And in that situation, it will affect the ability to make tears, and then it will also be possible to have dry eyes. Also, it can lead to changes in your eyes. And make it more difficult to wear contact lenses. By the way, you should know that birth control pills can also lead to Nausea and vomiting, Breast tenderness and enlargement. Anyway, it is very bad for the body if you take too much birth control medicine.