The eye test is a separate check from your written knowledge test, and it happens at almost every DMV visit

The vision screening at the DMV measures whether you can see well enough to drive safely. It is not the same as the written test — you will take both on the same day, but they test different things. The eye test usually takes two to five minutes and uses a machine or a printed chart to measure your sight distance and color perception.

Most states require you to pass the vision screening before you can get a driver license or renew one. If you fail, the DMV will not issue your license that day. You will be told what to do next — usually to see an eye doctor and come back with a corrected vision form, or to retest after a waiting period.

The specific equipment and standards vary by state. Some DMVs use an automated vision screener (a machine you look into), while others use a printed eye chart similar to what an optometrist uses. All of them measure the same thing: whether you meet your state's minimum vision requirement.

Key Takeaways

  • Most states require vision of at least 20/40 in each eye, with or without glasses or contacts, to pass the DMV eye test.
  • If you wear glasses or contacts, bring them with you — you will be tested while wearing them, and your license will be restricted to "corrective lenses required" if you need them to pass.
  • Failing the vision test does not mean you cannot get a license; you can usually return after seeing an eye doctor or after a retest waiting period set by your state.
  • Color blindness alone does not automatically disqualify you, but some states test for it and may restrict your license or require a medical evaluation.

What the standard vision requirement actually is

The minimum vision standard in most U.S. states is 20/40 in at least one eye, or 20/40 in each eye combined. This means you can see at 20 feet what a person with standard vision can see at 40 feet. A few states require 20/30 or better. Some states allow you to meet the standard with one eye if the other is blind or severely impaired.

If you wear glasses or contacts, you will be tested while wearing them. The DMV does not care whether your vision is natural or corrected — only whether you can see well enough to drive. If you pass while wearing correction, your license will carry a restriction code that says "corrective lenses required." You must wear them every time you drive, or you can be cited.

If you do not wear glasses or contacts and fail the test, you have two paths: get an eye exam and return with a corrected vision form, or wait the period your state sets (usually 30 to 90 days) and retest. You cannot drive legally during this time unless you already have a valid license.

How the eye test is administered at the DMV

The DMV uses one of two methods. The first is an automated vision screener — a machine that looks like a large camera or microscope. You place your forehead against it, look into the eyepieces, and focus on a target or image inside. The machine measures your vision in seconds and prints a result. This method is fast and consistent.

The second method is a printed eye chart, usually a Snellen chart or similar, posted on the wall. You stand at a marked distance (usually 20 feet) and read letters or symbols aloud, starting with the largest and moving to smaller ones. The DMV staff member records which line you can read clearly. This method takes longer but is still straightforward.

Some states also test color perception using a test like the Ishihara color blindness test, which shows colored dots arranged in patterns. You are asked what number or shape you see. This is less common than distance vision testing, but some states require it. Failing a color test does not automatically disqualify you in most states — it may result in a restriction or a referral to an eye doctor.

What happens if you fail the vision test

If you do not meet your state's minimum vision standard, the DMV will not issue your license that day. You will receive a written notice explaining the result and your options. The notice will tell you whether you can retest when ready, must wait a set period, or need to return with documentation from an eye doctor.

The most common next step is to see an optometrist or ophthalmologist. You will need an eye exam and a form — often called a vision certification form, medical report form, or corrected vision form — that the eye doctor fills out and signs. This form states your corrected vision (with glasses or contacts) and confirms you meet the state standard. You then return to the DMV with this form and usually retest to confirm the result.

If you choose to retest without seeing an eye doctor, your state will set a waiting period — typically 30, 60, or 90 days. You cannot obtain a license during this time. After the waiting period, you return to the DMV and take the vision test again. If you pass, you get your license. If you fail again, you will need to see an eye doctor before a third attempt.

Preparing for the vision test: what to bring and what to know

If you wear glasses or contacts, bring them with you to the DMV. Wear them to the appointment if possible. The DMV will test you while wearing them. If you have multiple pairs of glasses for different purposes (distance, reading, driving), bring the pair you use for driving or the one that gives you the best distance vision.

If you wear bifocals or progressive lenses, let the DMV staff know. They may ask you to look through a specific part of the lens to get an accurate reading. If you wear contacts, make sure they are clean and in good condition before you go — a dirty or damaged lens can affect the test result.

Do not wear sunglasses or tinted lenses during the test. If you have had recent eye surgery or a significant change in your vision, mention this to the DMV staff before the test. Some states allow a grace period or special consideration if your vision has recently changed due to medical treatment.

State-by-state differences in vision standards and testing

Most states use 20/40 as the minimum, but some require better vision. A few states allow 20/50 or 20/60 in one eye if the other eye meets a higher standard. Some states test both eyes separately and require each to meet the standard; others allow you to pass if the combined vision meets the requirement.

The waiting period for a retest after failure ranges from 30 to 90 days depending on the state. A few states allow an when ready retest. Some states require an eye doctor's form before any retest; others allow you to retest on your own after the waiting period.

Color blindness testing is required in some states and optional or not done in others. If your state does test for color blindness and you fail, the outcome varies: some states issue a license with no restriction, some require an eye doctor's evaluation, and a few may restrict your license or require additional testing.

Because these rules vary, check your state DMV website or call your local office before your appointment to confirm what vision standard applies to you and what to bring.

Common mistakes that cause people to fail or retake the test

The most common mistake is not wearing the correct glasses or contacts. If you have a new prescription, wear the new glasses to the DMV — do not wear an old pair. If you are not sure which pair is current, bring both and let the DMV staff test you with each one. Wearing the wrong correction can cause you to fail when you would pass with the right one.

Another mistake is not mentioning a recent change in vision or a medical condition. If you have had cataract surgery, LASIK, or another eye procedure in the past few months, your vision may still be stabilizing. Tell the DMV staff this before the test — they may be able to note it on your record or allow a retest after a waiting period rather than requiring an eye doctor's form when ready.

Some people also fail because they misunderstand the test format. On a printed chart, you must read the letters aloud clearly — mumbling or guessing does not work. On an automated screener, you must focus on the target and hold still. If you are unsure what you are seeing, say so rather than guessing. The staff will note your actual result, not your guess.

Frequently Asked Questions

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

Yes, in most states you take a vision test at every renewal, whether it is a standard renewal or an online renewal. Some states allow online renewals without a vision test if you renewed in person within the past few years, but you will eventually need to retest in person. Check your state's renewal rules to be sure.

What if I fail the vision test but I already have a valid driver license?

If you are renewing and fail the vision test, the DMV will not issue a new license until you pass or provide an eye doctor's form. Your current license remains valid until it expires, but you cannot renew it without passing the vision test or meeting your state's alternative requirement. If you are explore for a new license and fail, you cannot get one until you pass.

Can I wear my sunglasses during the vision test?

No. The DMV will ask you to remove sunglasses, tinted lenses, and any eyewear other than your regular glasses or contacts. The test must be done with clear vision, and tinted lenses can interfere with the measurement.

What if I am colorblind — does that mean I cannot get a driver license?

Colorblindness alone does not disqualify you in most states. If your state tests for color blindness and you fail, the outcome depends on your state's rules — you may get a license with no restriction, be asked to see an eye doctor, or have a restriction added to your license. Call your state DMV to ask what happens if you fail a color test.

How long does the vision test take?

The vision test itself takes two to five minutes. If you are using an automated screener, it is usually faster — under two minutes. If you are reading a printed chart, it may take three to five minutes. The wait to get called for the test depends on how busy your DMV is that day.