The eye test is a quick vision screening that happens before you take the written or road test

Arizona's Department of Transportation (ADOT) requires everyone explore for a driver license to pass a vision test. The test takes about five minutes and measures whether you can see well enough to drive safely. You do not need to study for it — it is a measurement of your current eyesight, not knowledge you can prepare for ahead of time.

The test happens at your local ADOT office during your appointment, before you move on to the written exam or the behind-the-wheel test. If you do not pass, you can retake it the same day or come back another time. Failing the vision test does not automatically disqualify you from getting a license, but you will need to meet Arizona's vision standards before ADOT will issue one.

Key Takeaways

  • Arizona requires vision of at least 20/40 in each eye, with or without corrective lenses, to drive.
  • The test uses a machine called a phoropter or a handheld vision screener, and takes about five minutes.
  • You can wear glasses or contacts during the test if you normally wear them while driving.
  • If you fail, you can retake the test the same day, and you may be referred to an eye doctor for a full exam.
  • Arizona also tests your peripheral vision and ability to see color, though color blindness alone does not prevent you from driving.

What Arizona's vision standard means

Arizona law requires you to have vision of at least 20/40 in each eye, measured separately. This means that at 20 feet away, you can see what a person with typical vision sees at 40 feet. If you wear glasses or contacts, the test measures your vision with them on — Arizona does not require you to see 20/40 without correction.

If one eye does not meet 20/40 but the other does, you can still pass. However, if both eyes together do not meet the standard, you will not pass the test. Some people have one eye that is much weaker than the other, and the test accounts for that by checking each eye separately.

How the test works at the ADOT office

The examiner will seat you in front of a machine or hold a handheld device in front of your face. You will look through the machine or at the device and tell the examiner what you see — usually letters or symbols that get smaller as the test goes on. The examiner adjusts the lens in front of your eye to find the smallest line you can read clearly.

The whole process takes about five minutes per eye. You will sit still, keep your head steady, and focus on one eye at a time. The examiner may ask you to cover one eye with your hand or a paddle while testing the other. If you wear glasses or contacts, wear them to the appointment — the test measures your vision with correction if that is how you normally drive.

Peripheral vision and color vision screening

Beyond the standard 20/40 test, Arizona also checks your peripheral vision — the ability to see to the sides without moving your eyes. This is important for driving because you need to notice cars and obstacles in your side vision. The examiner may use a straightforward test where you look straight ahead and tell them when you see their hand or a light moving in from the side.

Arizona also screens for color blindness using a test with colored dots or symbols. If you are color blind, you can still drive — color blindness does not automatically disqualify you. However, if you cannot distinguish red from green well enough to understand traffic lights, that is a different issue and may affect your ability to pass.

What happens if you do not pass

If you do not meet Arizona's 20/40 standard, you have options. You can retake the vision test the same day at most ADOT offices, though you may need to wait a few hours. Some people fail because they are nervous or tired, and a second attempt later the same day sometimes results in a pass.

If you fail twice, ADOT may refer you to an eye doctor for a full vision exam. You can also choose to see an eye doctor on your own before retaking the test. An optometrist or ophthalmologist can determine whether new glasses or contacts would help you meet the standard. Once you have a corrected vision that meets 20/40, you can return to ADOT and retake the test.

If you have a medical condition affecting your vision, bring documentation from your eye doctor. Some conditions may require a special restriction on your license — for example, "corrective lenses required" or "daylight driving only" — but they do not necessarily prevent you from driving.

Preparing for the vision test

If you wear glasses or contacts, bring them with you and wear them during the test. Make sure your glasses are clean and your contacts are fresh — a smudged lens or an old contact can affect the result. If you have recently changed your prescription, wear your current glasses or contacts, not an old pair.

Get enough sleep the night before your appointment. Tired eyes can make it harder to read the small letters on the vision test. Avoid straining your eyes the day of the test — do not spend hours on your phone or computer right before you go to ADOT.

If you suspect your vision may not meet the standard, consider seeing an eye doctor before your ADOT appointment. An exam costs money, but it gives you a clear answer about whether you need new glasses or contacts, and you will not waste time at ADOT if you are not ready to pass.

Frequently Asked Questions

Can I wear my glasses or contacts during the vision test?

Yes. Wear whatever you normally wear while driving. Arizona measures your vision with correction if you use it. If you wear bifocals or progressive lenses, let the examiner know so they can position the test correctly.

What if I have one eye that is much weaker than the other?

Arizona tests each eye separately. As long as each eye meets 20/40 on its own, you pass. If one eye is weaker, you still need that eye to reach 20/40 with correction. Some people with very weak vision in one eye may need to see an eye doctor to explore whether a stronger prescription or other options can help.

Do I have to pass the vision test before I take the written test?

Yes. The vision test happens first during your appointment. If you do not pass, you can retake it the same day before moving on to the written exam. You do not take the written or road test until your vision is cleared.

What if I am color blind?

Color blindness alone does not disqualify you from driving in Arizona. However, you must be able to see and understand traffic lights. If your color blindness makes it hard to distinguish red from green, talk to an eye doctor about whether you can safely drive.

How long does the vision test take?

The test itself takes about five minutes. The whole appointment, including paperwork and the written test if you pass vision, usually takes one to two hours depending on how busy the ADOT office is.