The DMV eye chart test checks whether you can see well enough to drive safely

When you visit the DMV for a license or renewal, staff will ask you to read letters or numbers on a chart from a set distance — usually about 20 feet away. This is called a vision screening. The test takes less than a minute and happens before you take the written or road test. If you cannot read the chart clearly, the DMV will not issue you a license until you see an eye doctor and bring back proof that your vision meets the state's standard.

The standard varies slightly by state, but most require you to see at least 20/40 vision in each eye, with or without glasses or contacts. If you wear corrective lenses, you must wear them during the test — and your license will be marked to show that you must wear them while driving. If you fail the vision test, you have the right to retake it at a later visit after seeing an eye care professional.

Key Takeaways

  • The DMV vision test is a quick screening that happens at your appointment, not a full eye exam.
  • You must wear glasses or contacts during the test if you normally wear them to drive.
  • Most states require 20/40 vision or better; if you do not meet this, you cannot get a license until an eye doctor clears you.
  • A failed vision test does not permanently block you — you can retake it after visiting an eye care provider.
  • Your license will show a restriction if you must wear corrective lenses to drive legally.

What the vision numbers mean

The "20/40" notation describes how clearly you see compared to a standard. The first number is the distance you stand from the chart — 20 feet. The second number is the distance at which a person with normal vision could read the same letters. So 20/40 means you must stand 20 feet away to read what someone with typical eyesight could read from 40 feet away.

If you have 20/20 vision, you see at the standard distance what the standard person sees at that same distance. Better-than-average vision is written as 20/15 or 20/10. Worse vision — say, 20/70 — means you need to be much closer to read the same letters. Most states set their minimum at 20/40 because research shows that drivers with worse vision than this have higher crash rates.

The test measures each eye separately. You may have different vision in each eye, and the DMV will record both. Some states use the better eye's score; others average both. A few states have different rules for commercial licenses, which require sharper vision than regular licenses.

How the test works at your DMV visit

When you arrive for your appointment, a DMV staff member will direct you to stand a marked distance from a wall-mounted chart. The chart usually shows rows of letters that get smaller toward the bottom, similar to an eye doctor's chart. You will read aloud starting from the top and going down until the letters become too small or blurry to read accurately.

The staff member will test each eye separately, usually covering one eye with a card or paddle while you read with the other. If you wear glasses or contacts, you must have them on during this test. If you wear bifocals or progressive lenses, tell the staff member — they may ask you to look through a specific part of your lens to get an accurate reading.

If you cannot read enough of the chart, the DMV will tell you that you have not met the vision standard and cannot receive a license at that time. You will need to see an optometrist or ophthalmologist, get a vision correction or medical clearance, and return to the DMV with documentation from the eye care provider.

What happens if you fail the vision test

Failing the DMV vision test does not mean you cannot drive — it means you cannot get a license from the DMV until you address the vision problem. The DMV will give you a form or letter explaining what vision standard you did not meet. Take this to an eye doctor.

An eye doctor can prescribe glasses or contacts to bring your vision up to the legal standard, or they can evaluate whether a medical condition is causing the poor vision and whether it can be treated. Once your vision meets the state's requirement, the eye doctor will provide a letter or completed form stating this. Bring that documentation back to the DMV, and you can complete your license transaction.

The time this takes depends on how quickly you can see an eye care provider. Some people get new glasses within a few days; others may need a medical evaluation that takes longer. There is no DMV-imposed waiting period — once you have the eye doctor's clearance, you can return to the DMV when ready.

Preparing for the vision test

If you wear glasses or contacts, bring them with you to your DMV appointment. Make sure they are clean and in good condition. If your prescription has changed recently or you suspect your vision has gotten worse, consider seeing an eye doctor before your DMV visit — this can save you a trip if you would fail the test anyway.

If you have had recent eye surgery, cataract removal, or a change in your vision, mention this to the DMV staff member before the test. Some temporary vision changes resolve on their own, and the staff member may note this in your file. If you are nervous about the test, remember that it is a straightforward screening, not a judgment — millions of people pass it every year, and many who do not pass it straightforward need a glasses prescription update.

Scam alert: fake vision test results

Do not purchase fake or forged eye doctor letters claiming you have passed a vision test. Some online services claim they can provide documentation without an actual exam. This is fraud. The DMV verifies vision clearance letters with the eye care provider who signed them, and submitting a fake letter can result in license denial, fines, and criminal charges.

If you genuinely cannot meet the vision standard even with correction, some states offer restricted licenses that limit where or when you can drive — for example, daylight driving only, or driving within a certain distance of home. Ask the DMV about restricted license options rather than attempting to forge documentation.

Vision standards vary by state and license type

Most states require 20/40 vision as a minimum, but a few allow 20/50 or 20/60 with a restriction on the license. Some states test both eyes together and separately; others use different methods. Commercial driver licenses (CDLs) typically require 20/40 in each eye and 20/25 in at least one eye, with stricter standards than regular licenses.

If you are moving to a new state or upgrading to a commercial license, check your new state's DMV website for its specific vision standard. The requirement may be different from what you are used to. Some states also have rules about color blindness or peripheral vision for certain license types, though these are less common.

Frequently Asked Questions

Can I wear sunglasses during the DMV vision test?

No. You must remove sunglasses and any tinted eyewear for the test. If you have a medical reason for wearing tinted lenses — such as light sensitivity from a condition — tell the DMV staff member, and they can note this and may allow it with documentation.

What if I have had LASIK or cataract surgery recently?

Vision can change for several weeks after eye surgery. If your surgery was within the last month or two, mention this to the DMV staff member before the test. They may allow you to retake the test at a later visit, or you may need an eye doctor's letter stating that your vision has stabilized.

Do I have to pass the vision test to renew my license by mail?

Most states that allow mail renewal still require an in-person vision test at some point — either at your last in-person visit or at your next renewal. Check your state's DMV website to see whether mail renewal includes a vision test waiver or whether you must visit in person.

What if I wear different prescriptions in each eye?

The DMV tests each eye separately, so your different prescriptions are fine. Wear your normal glasses or contacts during the test. The DMV will record the vision in each eye and will note on your license if you must wear corrective lenses.

Can I retake the vision test the same day if I fail?

Most DMV locations do not allow same-day retesting. You will need to return on a different day after seeing an eye doctor. However, policies vary by location — call your local DMV to ask whether they make exceptions for same-day retesting.