What the DMV eye exam actually tests
The DMV vision test measures whether you can see well enough to drive safely. It is not a comprehensive eye exam — the DMV does not check for color blindness, depth perception, or eye disease. The test focuses on visual acuity (how sharp your sight is) and peripheral vision (what you can see to the sides without moving your eyes).
Most states require you to read letters or numbers on a chart from a set distance, usually 20 feet away. The standard is 20/40 vision or better in at least one eye, though some states require 20/40 in each eye. A few states also test your ability to see objects in your peripheral vision by asking you to identify lights or objects appearing at the edges of your field of view.
You will take this test at your local DMV office when you explore for a new license, renew an expired one, or upgrade your license class. The test takes about two minutes. If you fail, you can usually retake it the same day or schedule another appointment within a few days.
Key Takeaways
- The DMV vision test checks how clearly you can see at a distance and what you can see to the sides, not your overall eye health.
- You must see 20/40 or better in at least one eye in most states; check your state's specific requirement before your appointment.
- Wearing your current glasses or contacts during the test is legal and expected if you normally wear them while driving.
- If you fail, you can retake the test the same day in most states, and you have the right to request a retest if you believe the result was wrong.
- If you cannot pass the test even with correction, your state may issue a restricted license that limits when or where you can drive.
Wear your glasses or contacts if you use them
If you wear glasses or contacts while driving, wear them during the DMV vision test. The test measures your corrected vision — the vision you actually have when you are behind the wheel. Removing your glasses to take the test will only show the DMV your uncorrected vision, which may be worse than what the law requires.
Make sure your glasses are clean and your prescription is current. If your glasses are scratched, smudged, or more than a year or two old, consider getting them cleaned or updated before your test. Contacts should be fresh and properly inserted. If you wear bifocals or progressive lenses, position yourself so you are looking through the correct part of the lens when reading the chart.
Bring a backup pair of glasses if you have one, in case your primary pair breaks or gets lost on the way to the DMV. Some DMV offices will allow you to use a backup pair if your main glasses fail the test, though this varies by location.
What to expect on test day
You will stand or sit about 20 feet from a vision chart (usually a Snellen chart with rows of letters that get smaller toward the bottom). The DMV employee will ask you to read the smallest line you can see clearly. You will read letters or numbers aloud, and the employee will mark how far down the chart you can read accurately.
The test is one eye at a time. You will cover one eye with a patch or your hand while reading with the other, then switch. If you wear glasses, you will keep them on for both eyes. The employee may ask you to identify lights or objects in your peripheral vision — this is usually done by asking you to point to or name lights that appear at the edges of your vision while you look straight ahead.
The entire process takes just a few minutes. You do not need to study or prepare beyond making sure your glasses are clean and you are well-rested. If you are nervous, take a few deep breaths before the test begins.
If you fail the test
Failing the DMV vision test does not mean you cannot get a license. Most states allow you to retake the test the same day or within a few days. Ask the DMV employee when you can schedule a retest and whether you need to pay a fee (many states do not charge for retests).
If you fail a second time, your state may require you to see an eye doctor and bring a signed statement confirming your vision is safe for driving. Some states will issue a restricted license that limits your driving — for example, you might be allowed to drive only during daylight hours, only on local roads, or only with corrective lenses. A restricted license is still a valid license and allows you to drive under those conditions.
If you believe the test result was wrong — for example, if you could not see the chart clearly because of glare or if the employee made an error — ask to speak with a supervisor. You have the right to request a retest, and some states will do this on the spot if you ask.
Getting an eye exam before your DMV test
If you have not had an eye exam in more than a year, or if you are worried you might not pass the DMV vision test, schedule an appointment with an optometrist or ophthalmologist before your DMV visit. An eye doctor can tell you whether your current glasses or contacts are strong enough and can update your prescription if needed.
An eye exam costs between $100 and $300 depending on your location and whether you have insurance, though many insurance plans cover routine exams. If cost is a concern, look for low-cost vision clinics in your area — many communities have them through health departments or nonprofit organizations. Some Walmart and Target vision centers offer exams for $60 to $100.
Bring your current glasses or contacts to the eye exam so the doctor can check whether they are still correct. If your prescription has changed, the doctor will give you a new one that you can use to order new glasses or contacts before your DMV appointment.
Scam alert: fake vision correction products
Do not buy eye drops, supplements, or devices that claim to improve your vision or help you pass the DMV test. Products marketed as "vision correction" or "natural eye improvement" do not work and are often scams. The only way to improve your vision is through glasses, contacts, or eye surgery (like LASIK), all of which require a prescription from a licensed eye doctor.
Do not attempt to cheat on the DMV vision test by memorizing the chart or using someone else's glasses. The DMV uses different charts at different locations and changes them regularly. Cheating on a vision test is fraud and can result in a suspended or revoked license, fines, and criminal charges if you cause an accident while driving unsafely.
If someone offers to help you pass the test illegally, report them to your state DMV. You can also report suspected fraud to your state's attorney general office.
Vision requirements by state
Most states require 20/40 vision or better in at least one eye, but some states have stricter requirements. A few states require 20/40 in each eye, and a small number require 20/30 or better. Some states also have minimum peripheral vision requirements — usually the ability to see at least 140 to 150 degrees to the sides.
Check your state's DMV website before your appointment to learn the exact requirement. If you are unsure whether you will meet the standard, call your local DMV office and ask. The staff can tell you what the requirement is and may be able to tell you whether your current vision is likely to pass, though they cannot make a final information without the actual test.
If you have a medical condition that affects your vision — such as cataracts, glaucoma, or macular degeneration — tell the DMV when you schedule your appointment. Some states have special procedures for people with certain eye conditions, and the DMV may ask you to bring documentation from an eye doctor.
Frequently Asked Questions
Can I wear sunglasses during the DMV vision test?
No. You must remove sunglasses and any tinted eyewear during the test. If you wear prescription sunglasses, ask the DMV whether you can use them instead of your regular glasses — some offices will allow this if your prescription is the same in both pairs.
What if I have one eye that is much worse than the other?
The DMV tests each eye separately. Most states only require you to meet the vision standard in one eye, so if your better eye passes, you will pass the test. Your license will not be restricted unless your state has a specific rule about vision in both eyes.
Do I need to bring my glasses prescription to the DMV?
No. You only need to bring your glasses or contacts themselves. The DMV does not need your prescription paperwork. If you fail the test and your state requires an eye doctor's statement, you will need to get that after your DMV visit.
How often do I have to retake the vision test?
Most states require a vision test every time you renew your license, which is usually every 4 to 8 years depending on your age and state. Some states test your vision at every renewal; others only test when you first get a license or when you turn a certain age.
What happens if I cannot pass the vision test even with glasses?
Your state may issue a restricted license that limits when or where you can drive, require you to use a special device in your car, or deny you a license. If this happens, ask the DMV about your options — some states allow you to appeal or request a hearing with an eye doctor present.