Missouri requires an eye test at renewal, and you take it at the DMV on the day you renew
When you renew your Missouri driver's license, the Department of Revenue will test your vision as part of the renewal process. You do not schedule a separate appointment with an eye doctor — the test happens at your local Missouri DMV office during your renewal visit. The test itself takes a few minutes and checks whether you can see well enough to drive safely.
Missouri law requires this test for all license renewals, with limited exceptions. If you fail the vision screening, the DMV will not issue your new license until you provide proof that you have corrected the problem — either by getting glasses or contacts, or by having an eye doctor confirm your vision meets the state standard.
Key Takeaways
- The vision test is performed at the DMV during your renewal appointment, not at a separate eye doctor's office.
- If you know your vision has changed, bringing your current glasses or contacts to the DMV can help you pass the screening.
- Failing the test does not deny you a license permanently — you can return with corrective lenses or an eye doctor's letter confirming you meet Missouri's vision standard.
- Missouri's vision standard is 20/40 in each eye, with or without correction, and a field of vision of at least 140 degrees.
What the Missouri vision test measures
The DMV vision screening checks two things: how clearly you can see (visual acuity) and how wide your field of vision is. The acuity test uses a standard eye chart, similar to what you see at an eye doctor's office. Missouri requires you to see at least 20/40 in each eye — meaning you can see at 20 feet what a person with standard vision sees at 40 feet. If you wear glasses or contacts, you take the test while wearing them.
The field of vision test checks whether you can see to the sides without turning your head. Missouri requires a field of vision of at least 140 degrees. This matters because driving safely depends on noticing movement and obstacles in your peripheral vision, not just straight ahead.
The DMV staff who administer the test are not eye doctors — they are trained to run the screening and record the results. If the screening shows a problem, you will be told on the spot and given information about next steps.
What happens if you fail the vision test
If you do not meet Missouri's vision standard during the DMV screening, you will not receive your renewed license that day. Instead, you will be given a form explaining what you need to do. You have two options: get corrective lenses (glasses or contacts) and return to the DMV to retake the test, or bring a letter from an eye doctor stating that you meet the state's vision standard.
Many people who fail the screening straightforward need updated glasses or contacts. If you suspect your vision has changed, you can visit an eye doctor before your DMV appointment, get a new prescription, and bring your corrected lenses with you. This avoids a failed test and a second trip to the DMV.
If you return to retake the test after getting corrective lenses, there is no additional fee — the retest is included in your renewal. However, you will need to schedule another appointment or visit during walk-in hours, depending on your local DMV office's procedures.
Preparing for the vision test before your DMV visit
If you currently wear glasses or contacts, bring them with you to your renewal appointment. You will take the vision test while wearing them, so having them on hand is essential. If your prescription has changed or you have been meaning to update your glasses, scheduling an eye exam before your DMV visit can save you time and a return trip.
You do not need to bring any documentation from an eye doctor unless you have failed a previous DMV vision screening or know you do not meet the standard. In that case, an eye doctor's letter confirming your vision meets Missouri's requirement (20/40 in each eye, 140-degree field of vision) will allow the DMV to issue your license without retesting.
If you have a medical condition that affects your vision — such as cataracts, macular degeneration, or diabetic retinopathy — and you are concerned about passing the test, contact your eye doctor before your DMV appointment. They can assess whether you meet the standard and provide documentation if needed.
Missouri's vision standards explained
Missouri's vision requirement is 20/40 in each eye, measured separately. This is less strict than the 20/20 standard many people think of as "normal" vision. The 20/40 standard means you can safely see road signs, traffic lights, and obstacles at the distances you encounter while driving, even if your vision is not perfect.
The 140-degree field of vision requirement ensures you can see hazards approaching from the sides — pedestrians, cyclists, and other vehicles in your peripheral vision. This is tested separately from acuity and is important for safe driving, especially at intersections and when changing lanes.
Certain eye conditions may make it difficult to meet these standards. If you have had eye surgery, have a progressive eye disease, or have lost vision in one eye, you may still be able to renew your license if your remaining vision meets the standard. An eye doctor can confirm this with a letter to the DMV.
Special situations: Waivers and medical documentation
Missouri allows limited exceptions to the vision standard in specific cases. If you have a medical condition that prevents you from meeting the standard but you can still drive safely, you may be able to request a waiver or restriction on your license. This is not automatic — you will need documentation from an eye doctor explaining your condition and why you can still drive safely despite not meeting the standard acuity or field of vision requirement.
If you have a condition like cataracts that is correctable, the DMV will not issue a waiver. Instead, you will be required to have the condition treated and then retake the vision test. Waivers are reserved for permanent conditions where treatment is not possible but safe driving is still feasible.
To request a waiver, bring your eye doctor's letter to the DMV when you renew. The letter should explain your condition, your current vision measurements, and why you can still drive safely. The DMV will review the request and decide whether to issue your license with or without restrictions (such as daytime driving only or corrective lenses required).
Frequently Asked Questions
Can I take the vision test without my glasses if I usually wear them while driving?
No. You must take the test while wearing the same corrective lenses you wear while driving. If you wear glasses or contacts, have them with you at your DMV appointment. Taking the test without them when you normally drive with them will likely result in a failed screening.
What if I wear bifocals or progressive lenses?
Bifocals and progressive lenses are fine — wear them during the test just as you would while driving. The DMV staff will note on your record that you require corrective lenses, and your renewed license will carry a restriction requiring you to wear them while driving.
How long does the vision test take?
The vision screening usually takes 2 to 5 minutes. It is one of the quickest parts of the renewal process. The entire renewal appointment, including paperwork, photo, and the vision test, typically takes 15 to 30 minutes depending on how busy your local DMV office is.
Can I get a letter from my eye doctor instead of taking the DMV test?
Only if you have already failed a DMV vision screening or if you are requesting a waiver due to a medical condition. For a routine renewal, you must take the test at the DMV. However, if you get an eye exam before your appointment and your doctor confirms you meet Missouri's standard, you can bring that documentation if you are concerned about the screening.
What if I have only one eye or limited vision in one eye?
Missouri tests each eye separately and requires 20/40 in each eye. If you have vision in only one eye, that eye must meet the 20/40 standard. If you have limited vision in one eye, the DMV will measure both eyes and may issue your license with restrictions or require you to provide an eye doctor's letter confirming you can drive safely.