What to Expect at Your Eye Appointment

What happens during a standard eye appointment

An eye appointment typically lasts 30 to 60 minutes and follows a predictable sequence. You'll start by checking in and filling out a health history form — bring your insurance card and photo ID. A technician will then run preliminary tests: they'll measure your eye pressure, check how well each eye focuses, and possibly take photos of the back of your eye. These tests are painless and take about 10 to 15 minutes.

After the technician finishes, the optometrist or ophthalmologist will see you. They'll ask about any vision problems you've noticed, whether you have eye strain or headaches, and about your general health — because conditions like diabetes and high blood pressure show up in the eyes. Then comes the refraction test, where you look through a machine called a phoropter and tell them which lens makes the letters on the chart clearer. This is how they determine your prescription. Finally, they'll examine the front and back of your eye with a microscope called a slit lamp and dilate your pupils to check the retina and optic nerve.

Key Takeaways

• Bring your insurance card, photo ID, and a list of any medications you take, because some drugs affect your eyes.
• Plan to be at the appointment for 45 minutes to an hour, and arrange for someone to drive you home if your pupils will be dilated.
• The technician's tests are not the full exam — the doctor performs the actual eye health check and writes your prescription.
• If you wear contacts, bring your current prescription or a box of your lenses so the doctor can verify the fit.
• Dilation makes your vision blurry and your eyes sensitive to light for several hours afterward, so sunglasses are essential if you're driving.

What to bring and how to prepare

Bring your insurance card, photo ID, and your current glasses or contacts — even if you don't wear them every day. The doctor needs to see what you're currently using to understand how your vision has changed. If you wear contacts, bring either your current prescription card (which your eye doctor or contact lens supplier gave you) or a box of your lenses so the doctor can check the fit and power.

Write down any vision problems you've had since your last appointment: blurriness at distance or near, floaters, flashing lights, eye pain, or dry eyes. Also list any medications you take regularly, because drugs for blood pressure, allergies, and depression can all affect your eyes and tear production. If you've had eye surgery or injury, or if eye disease runs in your family, mention that too.

Wear comfortable clothes and avoid heavy eye makeup on the day of your appointment — it can interfere with some of the tests. If you know your pupils will be dilated, arrange for someone else to drive you home, because your vision will be blurry and your eyes will be light-sensitive for 3 to 5 hours. If you must drive yourself, bring sunglasses.

Understanding the tests the technician performs

The tonometry test measures the pressure inside your eye. The technician will either use a small puff of air (which you'll feel as a quick breath against your eye) or a tiny probe that gently touches the surface after numbing drops. This test screens for glaucoma, a condition where high eye pressure damages the optic nerve. It's quick and painless either way.

The visual acuity test is the familiar one: you read letters on a chart from across the room. The technician will test each eye separately and together to measure how clearly you see at distance. They may also test your near vision by having you read small print on a card held close to your face.

The refraction screening uses an automated machine to estimate your prescription. You look into the machine and tell the technician when the letters come into focus. This gives the doctor a starting point for your full refraction test later. The visual field test, if performed, checks whether you can see in all directions — it's especially important if you have a family history of glaucoma. You'll look straight ahead and click a button whenever you see a light flash in your peripheral vision.

Some offices also take retinal photos or optical coherence tomography (OCT) scans, which create detailed images of the back of your eye. These are completely painless and let the doctor compare your eye health year to year.

What the doctor does during the exam

The doctor will perform a refraction — the definitive prescription test. You'll look through the phoropter, a large mechanical device with multiple lenses, and the doctor will flip lenses while asking "Is this better, or this?" They're finding the exact prescription that gives you the sharpest vision. This takes 5 to 10 minutes and is not uncomfortable, though some people find it tiring.

Next, the doctor will examine the front of your eye using a slit lamp, a microscope with a thin beam of light. They're checking the cornea, lens, and iris for scratches, cataracts, or inflammation. They'll also measure your eye pressure again if the technician's reading seemed unusual. Then they'll instill dilating drops into your eyes — these sting slightly for a few seconds and then numb the eye. The drops take 15 to 20 minutes to work fully.

Once your pupils are dilated, the doctor will look at the back of your eye — the retina, optic nerve, and blood vessels — using a special magnifying lens. They're checking for signs of diabetes, high blood pressure, macular degeneration, retinal tears, or other conditions. This is painless but can feel bright. If the doctor sees anything that needs follow-up, they'll explain it and may refer you to a specialist.

Reading your prescription and understanding your results

Your prescription will list three numbers for each eye: sphere (the main focusing power), cylinder (correction for astigmatism, if you have it), and axis (the angle of the astigmatism). If you wear bifocals or progressive lenses, there will also be an add number for reading. A minus sign means you're nearsighted; a plus sign means you're farsighted. The larger the number, the stronger the correction.

The prescription also includes your pupillary distance (PD) — the distance between your pupils. You'll need this if you order glasses online. Some doctors print it on your prescription automatically; others require you to ask for it.

If the doctor found any issues — dry eye, early cataracts, signs of diabetes, or anything else — they'll explain what it means and what to do next. Some findings need monitoring at your next appointment; others need treatment or a referral to a specialist. Ask the doctor to write down any recommendations so you remember them.

What to do after your appointment

If your pupils were dilated, your vision will be blurry for several hours. Avoid driving, using your phone for long periods, or doing detailed work until your vision clears. Wear sunglasses outdoors — your eyes will be sensitive to light. You can resume normal activities once the blurriness fades, usually by evening.

If the doctor prescribed new glasses or contacts, you can order them immediately or take time to decide. If you're switching from glasses to contacts for the first time, the doctor will schedule a separate contact lens fitting appointment — the prescription for contacts is different from the prescription for glasses, and you'll need training on insertion, removal, and care.

Schedule your next appointment before you leave. Most people need an eye exam every one to two years, but if you have diabetes, glaucoma, or another eye condition, your doctor may want to see you more often. If you notice any sudden changes in your vision — flashes of light, new floaters, pain, or blurriness — contact your eye doctor right away rather than waiting for your next scheduled visit.

Frequently Asked Questions

Do I need to stop wearing my contacts before my appointment?

Yes. Stop wearing soft contacts at least one day before your appointment, and hard or rigid gas-permeable contacts at least two weeks before. Contacts change the shape of your cornea, which throws off the refraction test. Tell the doctor when you stopped wearing them so they can account for it if needed.

Will the dilating drops hurt?

They sting for a few seconds when the doctor puts them in, but then they numb your eye. You won't feel pain during the exam itself. The main inconvenience is the blurriness and light sensitivity afterward, which lasts several hours.

What if I'm pregnant or nursing — are the eye drops safe?

Tell your doctor before the exam. Most dilating drops are considered safe during pregnancy and nursing, but your doctor may choose a different drop or skip dilation if you prefer. Some numbing drops used during tonometry are also safe, but it's best to mention your situation upfront.

Can I get my prescription the same day?

Yes. The doctor will give you a written prescription before you leave, and you can take it to any glasses or contact lens retailer — online or in-store. You don't have to order from the doctor's office, though many offices offer that service.

What if I have astigmatism — does that change the appointment?

No. The refraction test automatically checks for astigmatism, and the doctor will include cylinder and axis numbers in your prescription if you have it. The appointment length and process are the same.