Details: Eye exams for contact lenses include special tests that typically are not performed in routine eye exams for eyeglasses. If you are interested in contacts, or you already wear them and want to have your contact lens prescription updated, make sure you say so when you schedule your appointment for an eye exam. This way you can be sure your exam includes extra time for your optometrist or ophthalmologist to perform these additional tests needed for a proper contact lens fitting or evaluation.