Vision requirements for driving are set by your state, not by federal law, and they center on three things: how far you can see clearly, how wide your field of view is, and whether you can see colors and contrast well enough to read signs and spot hazards

Most states require a minimum visual acuity of 20/40 in at least one eye, though some require 20/30 or better. That means you can see at 20 feet what a person with standard vision sees at 40 feet. If you wear glasses or contacts, the test measures your vision with correction — so you can pass even if your uncorrected vision is worse, as long as you wear your lenses while driving. A few states allow one eye to be weaker if the other meets the standard; others require both eyes to meet a combined threshold.

Your field of view — how much you can see to the sides without moving your head — must usually be at least 140 degrees. This matters because you need to spot cars, pedestrians, and road signs in your peripheral vision. Some conditions, like advanced glaucoma or retinal damage, narrow your field and can make you fail the test even if your central vision is sharp.

You must also distinguish colors well enough to read traffic lights and colored warning signs. Complete color blindness is rare and usually does not bar you from driving, but the examiner will test your ability to identify red, yellow, and green.

Key Takeaways

  • Most states require 20/40 vision or better in at least one eye, measured with glasses or contacts if you wear them.
  • Your field of view must typically span at least 140 degrees side to side, which rules out some eye conditions even if your central vision is good.
  • You must be able to see and distinguish red, yellow, and green traffic lights and warning signs.
  • If you fail the vision test at the DMV, you can retake it after a waiting period, usually 30 to 90 days, once your vision improves or you get new glasses.
  • Some states require an eye doctor's report if you have had eye surgery, retinal procedures, or conditions that affect peripheral vision.

How the DMV tests your vision

The vision test at the DMV is brief and happens before or during your road test. You will read letters or numbers on a chart from a set distance — usually 20 feet — with one eye at a time. If you wear glasses or contacts, you wear them during the test. The examiner notes whether you meet the state minimum.

If you fail, the DMV will tell you the result and usually give you a waiting period before you can retest. That period ranges from 30 to 90 days depending on your state. You do not need to see an eye doctor to retest, but if your vision has not improved, you will fail again. Many people get new glasses or contacts between tests and pass on the second attempt.

Some states also test your ability to see in low light or to handle glare, especially if you are over a certain age or renewing after a long gap. These tests use a machine that simulates nighttime or bright conditions. Failing a glare test does not always mean you cannot drive, but it may restrict your license to daytime driving only.

Vision requirements after eye surgery or procedures

If you have had cataract surgery, LASIK, retinal surgery, or any procedure that affects how your eye focuses or sees, your state may require a report from your eye doctor before you can drive again or renew your license. This is especially true if the procedure was on one eye only or if you have a condition like diabetic retinopathy or macular degeneration.

The eye doctor's report typically confirms that your vision meets the state minimum and that you are safe to drive. Some states have a specific form you must bring to the DMV; others accept a letter from your ophthalmologist or optometrist. Check your state DMV website or call ahead to find out what document you need before your appointment.

You may need to wait a set number of days after surgery before you can drive — often 24 to 48 hours for LASIK, longer for retinal work. Your surgeon will tell you when it is safe. Do not drive before you have clearance, even if your vision feels sharp, because your eye may still be healing and your depth perception or peripheral vision may be off.

Conditions that can cause you to fail the vision test

Certain eye conditions make it hard to pass the DMV vision test or to drive safely. Cataracts cloud your lens and reduce contrast; advanced glaucoma narrows your field of view; diabetic retinopathy damages blood vessels in the retina and creates blind spots; and macular degeneration blurs your central vision. Age-related changes to the lens also reduce how much light reaches the retina, making night driving harder.

If you have one of these conditions, you may still be able to drive if it is mild enough that your vision still meets the state standard. But if your condition worsens, you will fail the test. Some states allow a restricted license — for example, daytime driving only, or driving only within a certain distance of home — if you fail the full test but can still drive safely under those limits.

Retinal procedures like laser surgery or injections for macular degeneration or diabetic retinopathy can improve or stabilize your vision, but recovery takes time. Your eye doctor will tell you when your vision has settled and when it is safe to drive again. Bring that clearance to the DMV when you retest.

What to do if you fail the vision test

If you fail, the DMV will issue a temporary permit or suspend your license, depending on your state and whether you were renewing or taking a new test. You will be told how long you must wait before you can retest — usually 30 to 90 days. Use that time to see an eye doctor, get new glasses or contacts if needed, or have surgery or treatment if your condition requires it.

When you go back to the DMV to retest, bring your glasses or contacts and any paperwork your eye doctor gave you. If your vision still does not meet the standard, you may be offered a restricted license or may have to wait longer. Some states allow you to retest sooner if you bring a letter from your eye doctor saying your vision has improved.

If you cannot pass the vision test even with correction, your state may not issue you a license. In that case, you have the right to request a hearing or appeal, though the outcome depends on whether your vision truly does not meet the legal standard. A few states have programs for people with low vision that allow limited driving under specific conditions, but these are rare.

Vision standards vary by state and by license type

The vision standard for a regular driver's license is the same in most states — 20/40 or better — but a few states require 20/30 or 20/25. Commercial driver's licenses (CDLs) have stricter standards: usually 20/25 in each eye, with a field of view of at least 140 degrees in each eye separately. If you are getting a CDL, your vision test will be more rigorous.

Some states also have different standards for drivers over 70 or 80, or for drivers renewing after a long gap. A few states require an eye exam by a licensed professional every few years, while others only require the DMV vision test. Check your state's DMV website to find the exact standard for your license type and age group.

If you move to a new state, your old license is usually valid until it expires, but when you renew, you will have to meet the new state's vision standard. If your vision does not meet it, you will have to retest or get a restricted license.

Frequently Asked Questions

Can I drive if I have vision in only one eye?

Yes, in most states. As long as your one good eye meets the minimum standard (usually 20/40) and your field of view is wide enough, you can pass the test. Some states require that your one eye have a field of view of at least 140 degrees; others have no special rule for monocular vision. Check your state DMV to confirm.

Do I have to retake the vision test if I get new glasses?

No. The DMV tests your vision with correction, so if your new glasses bring you to 20/40 or better, you can use them to pass the test without retesting. You only have to retest if the DMV failed you on a previous test and you are coming back after the waiting period.

What if I wear bifocals or progressive lenses?

Bifocals and progressive lenses are fine for driving and for the DMV vision test. Wear the lenses you normally drive in. Some people find that progressive lenses take a few days to adjust to, so if you just got them, practice driving before you go to the DMV.

How long after LASIK can I drive?

Most surgeons clear patients to drive 24 to 48 hours after LASIK, once the cornea has healed enough and vision has stabilized. Your surgeon will give you the exact timeline. Do not drive before you have clearance, even if your vision feels good, because your depth perception or contrast sensitivity may still be adjusting.

Can I get a license if I am colorblind?

Yes. Complete colorblindness is rare, and even if you have it, you can usually still identify traffic lights by their position and brightness. The DMV will test your ability to see red, yellow, and green, but failing that test does not automatically disqualify you. Talk to your eye doctor or the DMV about your specific type of colorblindness.