If you’ve never worn contact lenses before, it can seem a bit intimidating. After all, you’re inserting something into your eye! Let’s ease your mind about the first step – your contact lens exam. This post will walk you through what’s involved in a contact lens exam and what you can expect every step of the way.
Your eye doctor will first determine your overall eye health and vision. This includes a discussion of your health history and then a series of standard eye tests. These tests will evaluate eye focusing, eye teaming, depth perception, color vision, peripheral vision, and the response of your pupils to light. The doctor will also measure your eye’s fluid pressure to check for glaucoma, evaluate your retina and optic nerve, and test your vision with different lenses to assess whether contact lenses can improve your vision.
Your doctor will ask you about how wish to use the lenses, like whether they're for for special occasions or to wear all the time, as well as discuss things your eyes may need help with. Some patients may need to have their astigmatism corrected by a contact and some may not. Some patients with a history of dryness may excel by starting with a premium lens made specifically for dry eye patients. Some patients may need to have their distance and they're near corrected in the lenses. Your doctor will tailor the initial lens selection just for you.
Contact lenses require precise measurements of your eyes to fit properly. Using an instrument called a keratometer, your doctor will measure the curvature of your eye's cornea, the clear front surface of your eye. Next, the size of your eyes pupil is measured using a card or ruler showing different pupil sizes which is held next to your eye to determine the best match.
If you have dry eyes, your eye doctor will perform a tear film evaluation to measure the amount of tear film on the surface of your eye. If your tear film is insufficient or you have chronic dry eyes, contact lenses may not be a good option for you. However, some newer contact lenses deliver moisture to the surface of the eye, making them a better choice for individuals with dry eye issues.
The final step is to fit you with a trial pair of contact lenses. Once inserted, your eye doctor will examine the lenses in your eyes to ensure a good fit. He/she will check the alignment and movement of the lenses on the surface of your eye and if the fit looks good, the last step is to ensure the prescription is correct with a few more tests.
Your contact lens exam is over, but you’ll need to come back. Your doctor will usually have you wear the trial lenses for a week. After that, you’ll have a short follow-up exam to confirm that the lenses are working well for you and you can then order a supply of contact lenses. If this is your first contact lens exam, don’t worry. Choose a qualified optometrist and they’ll answer all your questions as you go. Just be sure to let them know you’re interested in contact lenses so that they know to allow for extra time in your appointment for the consultation and any specialized tests.