What a DMV Eye Examination Tests
A DMV eye examination measures your ability to see clearly and safely operate a vehicle. The test checks visual acuity (how sharp your vision is), peripheral vision (what you can see to the sides), and color recognition. The examiner will also look for conditions that might affect your driving, like cataracts or significant vision loss in one eye.
The examination is not a full medical eye exam. The DMV is not checking for diseases like glaucoma or diabetic retinopathy — that is your eye doctor's job. The DMV is checking whether you meet the minimum vision standard to hold a driver's license in your state. That standard varies slightly by state, but most require vision of at least 20/40 in each eye, with or without corrective lenses.
Key Takeaways
- Most states require vision of at least 20/40 in each eye to pass, though some allow 20/60 in one eye if the other meets the standard.
- You will read letters on a chart from a set distance, and the examiner will test your peripheral vision and color recognition.
- If you wear glasses or contacts, you must wear them during the test — your vision is measured with your correction in place.
- Failing the vision test does not automatically disqualify you; many states allow a retest after a set period or after you see an eye doctor.
- Some states accept a vision report from your optometrist or ophthalmologist instead of requiring you to test at the DMV.
How the Vision Test Works at the DMV
The examiner will seat you in front of a vision chart (usually a Snellen chart with rows of letters that get smaller as you read down). You will read the smallest line you can see clearly, usually from a distance of 20 feet. The examiner records what you can read in each eye separately, then both eyes together.
After the acuity test, the examiner checks your peripheral vision — how far to the left and right you can see without moving your eyes. This is often done with a straightforward confrontation test, where the examiner holds up fingers or a hand at the edge of your visual field and asks if you can see them. Some DMVs use a machine called a visual field screener for this step.
The examiner may also test color recognition, especially if you are explore for a commercial driver's license. This is usually a quick test using colored plates or a straightforward question about distinguishing red and green lights.
What Happens If You Wear Glasses or Contacts
Wear your glasses or contacts during the DMV eye examination. Your vision is measured with your correction in place, not without it. If you have recently changed your prescription, wear your current glasses or contacts — the one you use every day.
If you wear bifocals or progressive lenses, let the examiner know. They may ask you to look through different parts of the lens to make sure your prescription is correct for driving. If you wear contacts and have a backup pair of glasses, bring both — some examiners prefer to test with glasses if contacts are uncomfortable or if you have trouble with them.
If you do not currently wear correction but think you might need it, get an eye exam from an optometrist or ophthalmologist before your DMV test. Many people discover they need glasses only when they fail a DMV vision test, which means an extra trip and a retest fee.
Vision Standards by State
Most states require a minimum of 20/40 vision in each eye to pass the DMV test. Some states allow 20/60 in one eye if your other eye meets the 20/40 standard. A few states are slightly more lenient — Nevada and South Dakota, for example, allow 20/60 in each eye — while others are stricter.
Some states also have rules about peripheral vision. Many require at least 140 degrees of horizontal vision (side-to-side), and some check for specific blind spots that might affect driving safety. If you have had eye surgery, a stroke, or an eye condition that affects your field of vision, your state may require a report from an eye doctor before you can renew your license.
Check your state's DMV website for the exact vision standard, because it can affect whether you pass on your first try or need to see an eye doctor before retesting.
What Disqualifies You or Requires a Doctor's Report
Failing the vision test does not automatically mean you cannot get a license. Most states allow you to retest after a waiting period — usually 30 to 90 days — or after you see an eye doctor and bring a report showing your vision has improved or that you have been treated for a condition.
Some conditions do require a doctor's report before you can renew. These include significant vision loss in one eye, a recent eye surgery or injury, or a condition like diabetic retinopathy or macular degeneration that might affect your ability to drive safely. Your state's DMV will tell you if a doctor's report is needed — you do not have to guess.
If you have a condition that affects your vision but you believe you can still drive safely, ask your eye doctor whether they will write a report for the DMV. Many will, especially if your condition is stable or managed with treatment. The DMV may then allow you to renew with restrictions — for example, daylight driving only, or a requirement to retest every year instead of every few years.
Using an Eye Doctor's Report Instead of Testing at the DMV
Many states allow you to submit a vision report from your optometrist or ophthalmologist instead of taking the test at the DMV. This is especially common if you are renewing your license by mail or online, or if you have a condition that requires monitoring.
The report must be on the eye doctor's letterhead and include your visual acuity in each eye, your peripheral vision results, and any restrictions or recommendations. Some states have a specific form the eye doctor must fill out — check your DMV website to see if a form is required, and ask your eye doctor's office whether they have done this before.
Using an eye doctor's report usually takes longer than testing at the DMV (because you have to schedule an appointment and wait for the report to be sent), but it can be worth it if you are nervous about the DMV test or if you have a vision condition that needs explanation.
What to Bring and How to Prepare
Bring your current glasses or contacts if you wear them. Bring your driver's license or ID. Some DMVs may ask for your Social Security number or date of birth, so have that ready. If you are submitting an eye doctor's report instead of testing at the DMV, bring the original report or a certified copy.
On the day of your test, make sure you are well-rested and not tired or stressed — fatigue can affect how well you see. If you wear contacts, make sure they are clean and comfortable. If you have been in bright sunlight, give your eyes a few minutes to adjust to indoor lighting before the test.
If you know your vision is poor, see an eye doctor before your DMV appointment. Getting glasses or an updated prescription takes time, and you do not want to fail the DMV test and have to wait weeks for an appointment and a retest.
Frequently Asked Questions
Can I retake the vision test if I fail it?
Yes. Most states allow you to retake the test after a waiting period of 30 to 90 days. Some states let you retake it the same day if you think you made a mistake, though policies vary. Check your state's DMV website or ask at the counter when you fail — they will tell you when you can come back.
What if I fail the vision test but I wear glasses?
If you failed while wearing your current glasses, your prescription may be outdated. See an optometrist or ophthalmologist to get a new prescription, then return to the DMV for a retest. If you do not wear glasses but failed the test, you likely need them — get an eye exam before you retake the DMV test.
Do I have to take the vision test every time I renew my license?
Most states require a vision test at every renewal, though some allow you to skip it if you renewed recently and passed. A few states test only every other renewal or every few years. Check your state's renewal rules — they are usually on the DMV website or your renewal notice.
Can I wear sunglasses during the vision test?
No. The examiner needs to see your eyes clearly and needs you to see the chart without tint. Remove sunglasses and any tinted lenses before the test. If you are sensitive to light, let the examiner know — they may be able to dim the room slightly.
What if I have had eye surgery or an eye injury?
Tell the DMV examiner about any recent surgery or injury. Depending on what happened and how long ago, you may need a report from your eye doctor before you can renew your license. Some states require a waiting period after surgery before you can drive — your eye doctor can tell you what your state requires.