The eye chart test at your DMV measures how clearly you can see letters and numbers from a standard distance

When you renew or explore for a driver license, your state's Department of Motor Vehicles will have you read letters from a chart mounted on the wall or displayed on a screen. The test is called a visual acuity test, and it checks whether your vision meets your state's minimum standard for safe driving. You stand about 20 feet away and read progressively smaller lines of letters. The examiner notes which line you can read clearly with each eye separately, then both eyes together.

The result is expressed as a fraction — most commonly 20/40 or 20/20. The first number is always 20, representing the distance you stand from the chart. The second number is the distance at which a person with "normal" vision could read that same line. So 20/40 means you can read at 20 feet what a person with standard vision could read at 40 feet. Your state has a legal minimum — often 20/40 or 20/50 — and if you fall below it, you may need corrective lenses to drive.

The test takes about two minutes and requires no special preparation beyond wearing your glasses or contacts if you normally use them while driving. You cannot wear sunglasses during the test, and the examiner will ask you to remove them before you approach the chart.

Key Takeaways

  • The DMV eye chart measures visual acuity — how clearly you see — using a standard test where you read letters from 20 feet away.
  • Your result is written as a fraction like 20/40, where the second number shows the distance at which someone with normal vision could read the same line.
  • Each state sets its own minimum vision requirement, usually 20/40 or 20/50, and you must meet it without correction or with glasses or contacts.
  • If you fail the test, you can retake it when ready or return another day, and you may be issued a restricted license requiring corrective lenses.
  • The test does not measure color blindness, depth perception, or peripheral vision — only the sharpness of your central sight.

What happens if you don't meet your state's minimum vision standard

If your vision is worse than your state's legal minimum, the DMV will not issue you an unrestricted license. Your options depend on whether you can meet the standard with corrective lenses. If you can read the required line while wearing glasses or contact lenses, the examiner will note that on your license with a restriction code — usually something like "corrective lenses required" or "must wear glasses." You are then legally required to wear them every time you drive.

If you cannot meet the standard even with correction, you will be denied a license or issued a restricted license for limited driving only — such as daylight hours or local roads. Some states allow you to retest when ready; others require you to wait a set period, usually 30 days, before trying again. You can also request a vision test from an outside eye care provider and bring the results to the DMV to challenge the result.

If you wear bifocals or progressive lenses, tell the examiner before the test. Some states have specific rules about the type of correction allowed, and the examiner may ask you to tilt your head or move to a different position to may support you are reading through the correct part of the lens.

How the eye chart test differs from a full eye exam

The DMV eye chart tests only one thing: how sharply you can see letters at a distance. It does not test color vision, peripheral vision, depth perception, or eye health. A full eye exam by an optometrist or ophthalmologist includes all of those, plus checks for glaucoma, cataracts, and other conditions that affect safety but would not show up on a DMV chart.

The DMV test is also much faster and simpler. You read one chart, the examiner records your score, and you are done. An eye doctor's exam takes 20 to 45 minutes and uses multiple instruments and tests. If you have concerns about your vision beyond what the DMV measures — such as trouble seeing at night, glare sensitivity, or peripheral vision loss — a full eye exam is the right step, not a retake of the DMV test.

Some states allow you to bring results from a recent eye exam instead of taking the DMV test. If you have had an exam within the past 60 days, ask the DMV whether you can submit that report instead of being tested on-site.

Preparing for the DMV eye chart test

If you wear glasses or contacts for distance vision, bring them with you and wear them during the test. The examiner will test your vision both with and without correction, so the DMV knows whether you need them to drive. If you have had a recent change in your prescription, consider getting a new eye exam before your DMV appointment — a prescription that is too old may not be strong enough to help you pass.

On the day of the test, make sure you are well-rested and your eyes are not tired or irritated. If you have been staring at a screen all morning, take a break before you go to the DMV. Fatigue and eye strain can temporarily affect how well you read the chart, though the effect is usually small.

If you are nervous about the test, remember that you can retake it. Most states allow you to test again the same day or within a short window if you fail. There is no penalty for retaking it, and many people pass on a second attempt straightforward because they are less anxious.

Vision requirements vary by state and license type

Every state sets its own minimum vision standard, and they are not all the same. Most require 20/40 or 20/50 uncorrected or corrected vision, but some are stricter. A few states require 20/30. Some states have different standards for different license types — for example, a standard passenger vehicle license might require 20/40, but a commercial driver license (CDL) might require 20/30.

Your state's DMV website lists the exact standard. If you are close to the cutoff and worried about passing, look up your state's requirement before you go in. Knowing the number you need to hit can reduce anxiety and help you focus during the test.

If you move to a new state, you may need to retake the vision test as part of getting a new license, even if you passed in your previous state. The new state's standard might be different, and they will want their own record of your vision.

What to do if you disagree with your DMV vision test result

If you believe the DMV's result is wrong — perhaps you were tired, the lighting was poor, or you misread a line — you have options. Most states allow you to request an when ready retest at no additional cost. You can also take the test to an eye care provider and bring their written results to the DMV. If an optometrist or ophthalmologist confirms that your vision meets the standard, the DMV will usually accept that report and issue or renew your license.

Some states have a formal appeal process if you fail the test. Check your state's DMV website or ask the examiner for the procedure. You may need to submit a vision report from a licensed eye doctor within a certain timeframe, usually 30 to 60 days.

Keep in mind that the DMV's standard is a legal minimum for safety, not a judgment about your overall eye health. If you fail the test, it does not mean something is wrong with your eyes — it means your vision at that moment did not meet the state's threshold for unrestricted driving. Corrective lenses, a retest, or an outside eye exam can often resolve the issue.

Frequently Asked Questions

Can I wear my reading glasses for the DMV eye chart test?

No. Reading glasses are for close-up vision, and the DMV chart tests distance vision. If you wear glasses or contacts for distance, wear those. If you wear bifocals or progressive lenses, tell the examiner so they can position you correctly. Reading glasses will make the chart blurrier, not clearer.

What if I fail the eye chart test but my eye doctor says my vision is fine?

Bring your eye doctor's written report to the DMV. If the report shows you meet your state's vision standard, the DMV will usually accept it and issue your license with the appropriate restriction or without restriction. The DMV test is a screening tool, not a diagnosis, and an eye care provider's results carry weight.

Do I have to retake the eye chart test every time I renew my license?

Yes, most states require a vision test at every renewal. Some states allow you to skip it if you submit a recent eye exam report from an optometrist or ophthalmologist, usually one done within 60 days of your DMV visit. Check your state's rules before your appointment.

Can I wear contact lenses during the DMV eye chart test?

Yes. If you wear contacts for distance vision, wear them during the test. Tell the examiner you are wearing them so they note it on your record. The DMV needs to know whether you require correction to meet the vision standard.

What does it mean if my vision is 20/60?

It means you can read at 20 feet what a person with standard vision could read at 60 feet — your vision is worse than the typical state minimum of 20/40 or 20/50. You would likely be denied an unrestricted license but might be issued a restricted license for limited driving, or you could try corrective lenses if you have not already.