The California DMV eye chart test measures your vision to make sure you can see well enough to drive safely
When you renew your driver's license or get a new one in California, a DMV examiner will ask you to read letters and numbers on a chart from a specific distance. This is called a visual acuity test. The chart itself is usually a standard eye chart with rows of letters that get smaller as you move down — similar to what you see at an eye doctor's office. You stand about 20 feet away (or look through a machine that simulates that distance) and read the smallest line you can see clearly.
California law requires you to have vision of at least 20/40 in your better eye to drive without restrictions. If your vision is worse than that, you may still get a license with restrictions — like wearing corrective lenses or limiting yourself to daytime driving — depending on what the examiner finds. The test takes only a minute or two and is part of every license transaction at the DMV.
Key Takeaways
- You must be able to see at least 20/40 on the eye chart with your better eye to drive without restrictions in California.
- Bring your glasses or contacts if you normally wear them — the test measures your vision with correction if you use it.
- If you fail the vision test, the DMV will not issue your license until you pass or get a doctor's letter showing you meet the legal standard.
- The eye chart test is quick and happens at every DMV visit for a new or renewed license, regardless of your age.
- Some people are offered a retest on the spot if they fail; others are told to see an eye doctor and return with proof of their vision.
What the 20/40 standard means
The numbers 20/40 refer to how far away you can read letters compared to someone with standard vision. If your vision is 20/40, you can read at 20 feet what a person with normal vision can read at 40 feet. In other words, you need to be twice as close to see the same detail. This is the legal minimum for driving in California because research shows it is the threshold where most people can safely operate a vehicle.
If you wear glasses or contacts, the DMV tests your vision while you are wearing them. Your corrected vision is what matters for the license. If you do not normally wear correction but fail the test, you cannot straightforward put on glasses for the first time at the DMV and expect to pass — the examiner will likely ask you to see an eye doctor and come back with documentation.
What happens if you fail the eye chart test
If you cannot read the 20/40 line on the chart, the DMV will not issue your license on the spot. The examiner will give you one of two options: take a retest when ready, or see an eye doctor and return with a form signed by the doctor showing your vision meets California's standard.
Some DMV offices offer a second attempt right away if you think you straightforward misread the chart the first time. If you fail twice, you will need to visit an optometrist or ophthalmologist. The doctor will perform their own vision test and fill out a Report of Medical Evaluation (form DL 62) or similar documentation. You then bring this to the DMV along with your process. The whole process can add several weeks to getting your license, so it is worth taking the test seriously the first time.
If your vision genuinely cannot meet 20/40 even with correction, you may still be issued a restricted license. Restrictions can include wearing corrective lenses at all times while driving, limiting yourself to daylight hours, or restricting your driving to certain roads or speeds. The examiner and a supervisor will determine what restrictions are appropriate based on your vision and the doctor's report.
How to prepare for the eye chart test
If you wear glasses or contacts, bring them with you to the DMV. The test is designed to measure your vision as you actually drive, so wear whatever correction you normally use. If you have recently changed prescriptions, wear your current glasses or contacts — do not wear an old pair hoping it will help you pass.
If you do not wear correction but have been having trouble seeing road signs or the dashboard, consider seeing an eye doctor before your DMV appointment. You may discover you need glasses, and it is far better to know that before you take the test. If you are unsure whether your vision is good enough, an eye exam beforehand removes the guesswork.
On the day of your test, make sure you are well-rested and not tired or stressed. Vision can be slightly affected by fatigue. Arrive early so you are not rushed. The test itself is straightforward — the examiner will position you at the chart, cover one eye, and ask you to read the smallest line you can see. Then they will do the same with your other eye.
Understanding vision correction and driving restrictions
California recognizes that many people drive safely with glasses or contacts. If you pass the eye chart test while wearing correction, your license will be marked with a restriction code that says you must wear corrective lenses whenever you drive. This is a standard restriction and does not limit where or when you can drive — only that you must have your glasses or contacts on.
If your vision is between 20/40 and 20/70 even with correction, or if you have other vision issues like limited peripheral vision, the DMV may issue a license with additional restrictions. These might include no freeway driving, no night driving, or a requirement to use a bioptic telescope (a special lens device). A supervisor will review your case and the eye doctor's report to determine what restrictions are necessary and safe.
Scam alert: fake vision tests and online "DMV services"
Do not use any online service or app that claims to test your vision for the DMV or to help you pass the eye chart test. The DMV does not recognize remote vision tests, and no website can issue you a valid vision clearance. Some scam sites charge money to "verify" your vision or claim they can submit your information to the DMV — they cannot, and you will lose money and still have to take the real test.
If someone tells you that you can skip the eye chart test or that there is a way around it, that is false. Every driver in California must pass a vision test or provide a doctor's letter showing they meet the standard. There are no exceptions and no shortcuts. The only legitimate way to document your vision for the DMV is through an in-person test at the DMV or through a form completed by a licensed eye doctor.
What to bring to your DMV appointment
Bring your glasses or contacts if you wear them. Bring your current driver's license or ID. If you have had an eye exam recently and received a vision report from your doctor, you can bring that too — it may speed things up if there is any question about your vision. If you are retaking the test after failing it, bring any paperwork the DMV gave you the first time.
You do not need to bring anything special for the eye chart test itself. The DMV provides the chart and conducts the test. Just be ready to stand still, focus, and read the letters as clearly as you can.
Frequently Asked Questions
Can I wear sunglasses during the eye chart test?
No. The examiner needs to see your eyes clearly and needs you to see the chart without any tint or obstruction. Remove sunglasses and any other eyewear except your regular glasses or contacts if you wear them for driving.
What if I fail the test but I know my vision is fine?
Ask the examiner if you can retake the test when ready. Nervousness, fatigue, or misreading a letter can happen. If you fail a second time, see an eye doctor within a few days. Bring the doctor's report back to the DMV. If your vision truly meets the standard, the doctor's letter will clear you.
Do I have to pass the eye chart test every time I renew my license?
Yes. California requires a vision test at every license renewal, regardless of how long you have held a license or how many times you have passed before. Vision can change over time, so the DMV tests it each time.
What is the difference between 20/40 and 20/60 vision?
At 20/60, you need to be three times as close to see what someone with normal vision can see at 60 feet. California allows driving with 20/40 vision without restrictions. Vision worse than 20/40 may result in restrictions or a requirement to see a doctor and return with proof you still meet the legal standard.
Can I use a contact lens in only one eye if my other eye is too weak?
Yes, as long as your better eye (with or without correction) meets the 20/40 standard. The DMV tests each eye separately and uses your better eye to determine whether you meet the legal requirement. Many people drive safely with one strong eye and one weaker eye.