The eye exam is a separate test from the road test, and you take it first

When you go in for your driver license test, the examiner will check your vision before you ever get behind the wheel. This is a quick screening — usually under five minutes — that measures whether you can see well enough to drive safely. You do not need to study for it, but you do need to know what happens and what disqualifies you.

The test itself is straightforward: you look into a machine called a vision screener (or sometimes read a chart on the wall), and the examiner records what you can see at a standard distance. Most states require you to see at least 20/40 vision in each eye, though some require 20/30. If you wear glasses or contacts, you take the test wearing them — and if you do, your license will be marked with a restriction saying you must wear them while driving.

If you fail the vision screening, you will not move on to the road test that day. You will be sent home and told to see an eye doctor, get a new prescription if needed, and come back when your vision meets the standard.

Key Takeaways

  • The vision screening happens before the road test and takes about five minutes; you look into a machine or read a chart from a set distance.
  • Most states require 20/40 vision or better in each eye, though the exact standard varies by state.
  • If you wear glasses or contacts, wear them to the test — your license will note the restriction, and you must wear them every time you drive.
  • Failing the vision test means you go home, see an eye doctor, and reschedule your road test for another day.
  • Some states allow you to bring a recent eye exam from your own doctor instead of taking their screening, but you must ask ahead of time.

What the vision screener measures

The examiner is checking two things: how clearly you see at a distance (called visual acuity), and whether your peripheral vision — what you can see to the sides without moving your eyes — is adequate. The distance vision test is the main one. You will look into the machine or at a wall chart and read letters or symbols that get progressively smaller. The examiner records the smallest line you can read accurately.

Visual acuity is written as a fraction: 20/40 means that at 20 feet away, you can see what a person with normal vision can see at 40 feet. So 20/40 is worse than 20/20 (perfect vision), but it is still considered safe enough to drive in most states. A few states use 20/30 as the cutoff, which is slightly stricter. Check your state's DMV website before you go in so you know the exact standard.

The peripheral vision check is usually quick — the examiner may ask you to look straight ahead while they move their hand or a light into your side vision, and you signal when you see it. This matters because you need to notice cars, pedestrians, and obstacles coming from the sides, not just straight ahead.

Bringing your own eye exam instead of taking theirs

Some states and some DMV locations will accept a recent vision report from your own eye doctor instead of making you take their screening. This is not automatic — you have to ask, and you have to bring the paperwork. The exam from your doctor must be recent (usually within 60 days, but this varies), and it must include your visual acuity in each eye and note whether you need correction.

If your state or location allows this, it can save time on test day. Call your local DMV office before you schedule your road test and ask whether they accept outside eye exams, what form they need, and how recent the exam must be. If they say yes, schedule an appointment with an optometrist or ophthalmologist, get the results in writing, and bring the paperwork with you.

Do not assume your last eye exam will work — some DMVs require the exam to be done after you applied for your license, and some have specific forms they want the doctor to fill out. Calling ahead takes five minutes and prevents a wasted trip.

What happens if you fail the vision test

If you cannot read the required line on the chart, or if your peripheral vision is inadequate, the examiner will tell you that you did not meet the standard. You will not take the road test that day. You will be given information about what to do next, which is to see an eye doctor — either an optometrist or an ophthalmologist — and get your vision corrected if possible.

The eye doctor will do a full exam, check for any underlying eye problems, and write you a new prescription if you need one. Once you have glasses or contacts that bring your vision up to the required standard, you can reschedule your road test. Bring your new glasses or contacts with you on the second attempt, and you will take the vision screening again. If you pass, you move on to the road test.

If an eye doctor tells you that your vision cannot be corrected to the required standard — for example, because of a permanent eye condition — you may still be able to get a license in some states, but with restrictions. Some states issue licenses for people with lower vision if they pass an on-road evaluation or agree to drive only in daylight or only in their local area. Ask your eye doctor what options might be available, and then contact your state DMV to ask about restricted licenses.

Wearing glasses or contacts during the test

If you normally wear glasses or contacts to see clearly, wear them to your vision screening. The examiner is testing your vision as you actually use it — not your vision without correction. If you wear them and pass, your license will be marked with a restriction code that says you must wear corrective lenses while driving. This is a legal requirement, not a suggestion. If you are stopped by police and you are not wearing the glasses or contacts your license requires, you can be cited.

If you wear bifocals or progressive lenses, wear those. If you wear contacts, make sure they are clean and in good condition before you go in. If one contact is bothering you or your vision feels off on test day, tell the examiner — they may let you remove it and test each eye separately, or they may ask you to reschedule when your contacts are more comfortable.

Some people ask whether they should take the test without glasses to see if they can pass without correction. Do not do this. If you normally wear glasses and you take the test without them, you will likely fail, waste the test fee, and have to come back. Take the test the way you actually drive.

Color blindness and the vision test

Most DMV vision screenings do not test for color blindness — they test for visual acuity and peripheral vision. However, some states do include a color vision check, usually a quick test where you look at a pattern of colored dots and say what number or shape you see. If your state does this and you are color blind, it does not automatically disqualify you. Most people with color blindness can drive safely because traffic lights are arranged in a standard order (red on top, green on bottom), and you learn to recognize them by position, not just color.

If you know you are color blind, mention it to the examiner when you arrive. They will let you know whether your state tests for it and what the result means for your license. In the vast majority of cases, color blindness does not prevent you from getting a license.

Preparing for the vision screening

There is not much to prepare for — the vision test is not something you can study for. But you can take a few practical steps. If you wear glasses or contacts, make sure they are clean and in good condition. If your glasses are scratched or your prescription is old, consider getting new glasses before test day. If you wear contacts, put in a fresh pair the morning of your test.

Get a good night of sleep before you go in. Your eyes are more tired and your vision is slightly worse when you are fatigued. Eat something and stay hydrated — low blood sugar and dehydration can affect your focus. If you are nervous, that is normal, but the vision test is the easiest part of the whole process. You are not being judged on anything except whether you can see.

Arrive a few minutes early so you are not rushed. The examiner will explain what you are about to do, and you can ask questions if you do not understand the instructions. If you do not hear something clearly or if you are unsure about an answer, say so. The examiner wants an accurate reading of your vision, not a guess.

Frequently Asked Questions

Can I wear sunglasses during the vision test?

No. The examiner needs to see your eyes and needs you to see clearly into the vision screener or at the chart. Remove sunglasses and any tinted glasses before the test. If you have light-sensitive eyes, mention it to the examiner — they may be able to dim the room slightly or adjust the machine.

What if I have had eye surgery or have an eye condition?

Tell the examiner before the test starts. If you have had LASIK, cataract surgery, or any other procedure, or if you have a condition like astigmatism or macular degeneration, the examiner needs to know. They will still test your current vision — the test measures what you can see now, not what you could see before surgery.

Do I have to take the vision test every time I renew my license?

Most states require a vision screening every time you renew, though some states only require it when you first get a license or when you reach a certain age. Check your state's DMV website to find out the rule where you live. If your state requires it and you skip it, your renewal may be delayed.

What if I fail the vision test but I know I can see fine?

If you believe the result is wrong, ask the examiner to test you again or to explain what you missed. If you still disagree, you can request a retest on another day or bring a recent eye exam from your own doctor. But if you genuinely cannot read the required line, the issue is usually that your prescription is outdated or you need a new one. See an eye doctor and come back.

Is the vision test the same at every DMV office?

The standard is the same across your state, but the equipment and the examiner may vary slightly. Some offices use a machine, others use a wall chart. Some examiners are more strict about peripheral vision than others. The vision requirement itself — usually 20/40 — does not change from office to office within the same state.