How the eye test works and what you need to pass
The eye test for your driving license is a quick check to make sure you can see well enough to drive safely. You read letters on a chart from a set distance — usually 20 feet — and the examiner notes whether you meet the minimum vision standard for your state. Most states require you to see at least 20/40 with correction (glasses or contacts), meaning what a person with normal vision sees at 40 feet, you can see at 20 feet. If you wear glasses or contacts, you must wear them during the test.
The test itself takes about five minutes. You stand in front of a chart with rows of letters that get smaller as you move down. The examiner points to letters and you read them aloud. They test each eye separately, then both together. Some examiners also check your peripheral vision — how far to the side you can see — by asking you to look straight ahead while they move their hand into your field of vision and you signal when you first see movement.
You pass if you can read the required line on the chart. If you cannot, the examiner will offer you a pinhole test: you look through a small hole that temporarily sharpens your vision. If you pass with the pinhole, it means glasses or contacts will fix your vision enough to meet the standard. If you fail even with the pinhole, you will not pass the eye test and cannot get or renew your license until your vision improves or you get a corrective device that works.
Key Takeaways
- Wear your glasses or contacts to the test if you normally wear them while driving, because you will be tested with the correction you actually use.
- The test measures whether you can read letters from 20 feet away; most states require 20/40 vision with correction.
- If you fail the distance vision test, a pinhole test determines whether glasses or contacts can bring you to the passing standard.
- Failing the eye test means you cannot receive your license until your vision meets the requirement, either naturally or with correction.
- Some states also test color blindness and peripheral vision, though these are less common reasons for failure.
What happens if you fail the eye test
If you cannot read the required line even with the pinhole test, you will be told you did not pass. You will not receive your license that day. The examiner will give you a written notice stating that your vision does not meet the standard and explaining what you need to do next.
Your next step is to see an eye doctor — an optometrist or ophthalmologist — who can test your vision thoroughly and determine whether glasses, contacts, or a different prescription will bring you to the passing standard. Once you have a new prescription or corrective device, you can return to the licensing office and retake the eye test. There is usually no additional fee for the retest, though you may have to pay for the license renewal itself if that is what you are doing.
Some states allow you to bring a letter from your eye doctor stating that your vision meets the standard with correction. Check your state's rules before you schedule your eye appointment, because a few states will accept this letter in place of retesting at the licensing office.
Preparing for the test: what to bring and what to expect
Bring your current glasses or contacts if you wear them. Do not assume the licensing office will have a backup pair or that you can borrow one. If you wear bifocals or progressive lenses, let the examiner know before the test starts, because the way you position your head matters when looking at the chart.
Arrive with clean glasses if you wear them. Smudges, scratches, or dirt on the lenses can make the test harder and may cause you to fail even if your prescription is correct. If your glasses are damaged, get them cleaned or replaced before you go in.
If you have had recent eye surgery, cataract removal, or a significant change in your prescription, tell the examiner. They may ask you to wait a certain amount of time before retesting, or they may note the surgery in your file so the result is not held against you if you need to retest later.
Vision standards by state and special circumstances
Most states use 20/40 as the minimum standard with correction, but a few states require 20/30. A handful of states have different standards for different license types — for example, a commercial driver's license may require better vision than a regular passenger vehicle license. Check your state's Department of Motor Vehicles website to confirm the exact standard before your test.
If you have a condition that affects your vision — such as macular degeneration, diabetic retinopathy, or severe astigmatism — you may still be able to pass if your corrected vision meets the standard. The test measures what you can see with your best correction, not your uncorrected vision. However, if your condition is progressive or if your vision fluctuates, the examiner may require you to retake the test more frequently than drivers without eye conditions.
Some states offer restricted licenses for drivers whose vision is slightly below the standard but who can still drive safely under certain conditions — for example, daytime driving only or driving within a limited area. Ask the examiner whether this option is available in your state if you fall just short of passing.
Color blindness and peripheral vision tests
A few states test for color blindness as part of the eye exam, usually by showing you a series of colored dots or asking you to identify colors on a traffic light. Color blindness rarely causes someone to fail the test entirely, because most people with color blindness can still distinguish red, yellow, and green traffic lights by their position and brightness. However, if you have severe color blindness, the examiner may note it in your file or require additional testing.
Peripheral vision — your ability to see to the sides without moving your eyes — is tested in some states but not others. The examiner will ask you to look straight ahead at a fixed point while they move their hand or a light into your field of vision from the side. You signal when you first see the movement. This test checks whether you have a normal range of side vision, which matters for spotting vehicles and pedestrians approaching from the side.
Failing a peripheral vision test is uncommon and usually indicates a serious eye condition such as glaucoma or retinitis pigmentosa. If you fail, your eye doctor can determine whether the condition is treatable or whether you need restrictions on your license.
How often you need to retake the eye test
Most states require you to pass the eye test only when you first get your license or renew it. The renewal cycle is typically every four to eight years, depending on your state and your age. Older drivers — usually those over 70 — may be required to renew more frequently and retake the eye test each time.
If you have an eye condition or if you failed the test previously, your state may require you to retake it more often. Some states require annual retesting for drivers with certain conditions. Check your license or your state's DMV website to see whether you have any special requirements.
If your vision changes significantly between renewals — for example, you have eye surgery or your prescription changes dramatically — you do not have to wait for your renewal to update your license. You can visit your local licensing office and request a vision retest. This is useful if you were borderline on your last test and have since gotten a new prescription that may help you pass more comfortably.
Frequently Asked Questions
Can I wear sunglasses during the eye test?
No. You must remove sunglasses and any tinted eyewear for the test. The examiner needs to see your eyes clearly and needs you to see the chart without any tint or glare reduction. If you have light-sensitive eyes, tell the examiner and they may dim the room slightly, but you cannot wear shaded lenses during the actual test.
What if I cannot read the chart because I am nervous or tired?
Tell the examiner. They can give you a moment to relax and can repeat the test if you ask. Examiners understand that nervousness and fatigue can affect performance. However, if you consistently cannot read the required line even after a break, you will not pass, because the test measures your actual vision under normal conditions.
Do I need to pass the eye test if I only drive at night?
Yes. The vision standard applies to all drivers regardless of when they drive. However, if you have a condition that affects your night vision specifically, you may be able to get a restricted license that limits you to daytime driving. You would still need to pass the standard eye test first, then request the restriction.
What if I have had LASIK or another vision correction surgery?
You can take the eye test after your eye has healed from surgery, which is usually four to six weeks. Your vision may still be stabilizing during this time, so some eye doctors recommend waiting a full three months before getting your license renewed. Bring any paperwork from your surgeon to the licensing office so they know you have had the procedure.
Can I retake the eye test the same day if I fail?
Most states do not allow same-day retesting. You must return on a different day, usually after you have seen an eye doctor and obtained a new prescription or corrective device. A few states may allow a retest after a short waiting period on the same day, but this is uncommon. Check your state's policy before you plan your visit.