What Happens During a Contact Lens Exam?

A contact lens exam is not like a regular eye check. It is a special process to see how a lens fits your eye, how your eyes react, and how to keep your vision clear and comfortable. Knowing what to expect can help you feel more relaxed when your exam starts.

Why a Regular Exam Is Not Enough

A regular eye exam checks how well you see, looks for nearsightedness, farsightedness, and astigmatism, and makes sure your eyes are healthy. This exam gives you a prescription for glasses. However, glasses and contact lenses are different. Contacts sit directly on your eye and need special measurements. That is why you need a contact lens exam.

The Conversation Comes First

This conversation is likely to take the form of an interview. Be ready to answer questions about what your typical day looks like. Do you spend long hours on a computer, and do you go on hikes or swims? Do you experience any dry, scratchy feelings by evening?

Your answers will shape every choice that follows, so please give as much information as possible.

Mapping the Surface of Your Eye

Next, your doctor will measure the shape of your cornea. You will look into a device that shines a gentle ring of light on your eye. This fast, painless test makes a detailed map of your cornea’s curves, called corneal topography.

With this map, your doctor can choose a lens that fits well and moves naturally when you blink. The right fit helps prevent redness, irritation, or scratches.

Checking Your Tear Film

A contact lens sits on a thin layer of tears. If this layer is not stable or your eyes are too dry, the lens might feel uncomfortable. Your doctor will check your tear layer with a microscope. Sometimes, a small drop of dye is used to see how your tears spread and how fast they dry. If your eyes are dry, your doctor may suggest a lens material that better retains moisture.

Finding the Right Prescription

Your glasses prescription does not always work for contacts. Since a contact lens sits right on your eye, it often needs a different strength than glasses, which sit about twelve millimeters away.

Your doctor will adjust your prescription and may put a trial lens on your eye, then ask you to read the letter chart. This only takes a few minutes.

Trying a Lens On

You will get to try on a trial lens on your eye and watch how it moves when you blink. You will need to explain how it feels. If the fit or comfort is not right, the doctor will try other shapes or materials until it feels good. Before you leave, you will also learn how to put in, take out, and care for your lenses.

The Follow-Up Visit

A few days or a week later, you will come back for a quick follow-up visit. Your doctor will check that the lenses still fit well and that your eyes are healthy. They will ask about your comfort and vision. If everything is good, you will get your final prescription. If something does not feel right, changes can be made.

To learn more about what happens during a contact lens exam, visit Premier Eyecare Optometric Center in Bakersfield, California. Call (661) 588-8222 to book your appointment.

https://www.optometrists.org/general-practice-optometry/optical/guide-to-contact-lenses/what-are-contact-lenses/the-contact-lens-exam/