Instead of wearing glasses, many patients have decided to wear contact lenses for their prescription eyewear. If you are considering wearing contacts, your optometrist will need to complete a contact lense evaluation. This evaluation will help the optometrist determine the type and size of the contacts that are right for you. Once Dr. Gurley has determined the right contacts for you, you will receive your contact prescription as part of your examination. Your eyeglasses prescription is different from your contacts prescription because the contacts sit on the surface of your eye, instead of in front of them.