To pass the driver’s license eye test requirements in nearly every state, you need to read the 20/40 line on a standard vision chart, with glasses or contacts if you use them, and show enough peripheral vision (usually around 140 degrees combined). Miss that mark and you’ll either get a license with restrictions, be sent to an eye specialist for a fuller evaluation, or be denied until your vision is corrected. The screening itself takes under a minute at the counter.
The Vision Standard You Have to Meet
The number to know is 20/40. That means seeing at 20 feet what a person with unimpaired vision sees at 40 feet. You need to hit it in at least one eye, and many states want it in both eyes together. The same 20/40 threshold anchors the federal standard for commercial drivers, applied to each eye individually.1eCFR. 49 CFR 391.41 – Physical Qualifications for Drivers
Peripheral vision matters too. Most states require a horizontal field of at least 70 degrees per eye, roughly 140 degrees side to side. Coming in under that doesn’t automatically end things, but it triggers a closer look and usually some restrictions.
Between 20/40 and 20/70 is a gray zone. Many states will still issue a license at these levels, but with conditions attached, commonly a daylight-only limit or a speed cap around 45 mph. Below 20/70 in your better eye, a standard unrestricted license is generally off the table.
How the Screening Works at the Counter
The test happens at the service window, usually right around the time your photo is taken. Most offices use a stereoscopic viewer (the Optec 1000 is a common one) where you look through an eyepiece and read letters or numbers displayed inside. Some offices still use a Snellen wall chart across the room. Either way, the examiner checks each eye separately, then both together. It’s pass or fail.
Bring your glasses or contacts if you wear them. You’re allowed to use them during the screening, and if you can only meet the standard with them on, your license will carry a restriction requiring you to wear them any time you drive.
How to Prepare
The screening is simple enough that most people don’t think about it until they’re at the counter. A little prep helps, especially if it’s been a while since your last exam.
- Wear your current prescription. An outdated pair of glasses can be the difference between passing and failing.
- Test yourself at home. Print a Snellen chart and check whether you can read the 20/40 line from 20 feet. It’s not official, but it tells you where you stand.
- Get an eye exam if you’re uncertain. An optometrist can update your prescription and give you an honest read on whether you’ll pass. Order new lenses before your appointment if you need them.
- Rest your eyes that morning. Hours of screen time right before the test can temporarily blur your distance vision.
The screening is included in your standard license application or renewal fee. If you end up needing a specialist evaluation, that’s a separate medical cost you’ll pay out of pocket.
If You Pass Only With Glasses or Contacts
Passing with corrective lenses adds a restriction code to your license requiring you to wear them whenever you drive. The letter used varies by state (some use B, others A or something else), but the effect is the same everywhere.
This restriction matters more than most drivers realize. Getting pulled over without your glasses can mean a citation with a fine in the low hundreds, a moving violation that puts points on your record, or, in a handful of states, penalties on par with driving without a license, including the possibility of jail time. Officers can check the restriction during any routine stop.
If your vision improves later, whether through LASIK or another treatment, you can have the restriction removed by passing the screening again without lenses. Many states let you do this at any licensing office without waiting for your renewal.
If You Fail the Screening
Failing at the counter doesn’t end the process. The licensing agency will refer you to an optometrist or ophthalmologist for a full evaluation and hand you a state-specific medical form. The specialist fills in your diagnosis, your acuity with and without correction, your peripheral vision measurements, and their opinion on whether you can drive safely.
Ask the examiner for the return deadline when you get the referral. Timelines vary by state, and missing the deadline generally stalls your application or, for renewals, may leave your license unextended. Once the form comes back, the agency’s medical review staff decide what happens next.
Several outcomes are possible depending on what the specialist reports:
- A full license with a corrective-lens restriction, if your vision corrects to 20/40 or better.
- A restricted license, if your corrected acuity lands between 20/40 and 20/70, with limits like daytime driving, a speed cap, or certain road types only.
- A shorter renewal cycle, sometimes annual, if you have a condition that may worsen over time such as cataracts or macular degeneration.
- A behind-the-wheel test, in states that want to see whether you can compensate for a visual deficit in real driving.
- Denial, if your acuity falls below the state’s absolute minimum, often 20/70 in the better eye.
If you’re renewing rather than applying for the first time, ask specifically whether you can keep driving on your current license while the medical review is underway. Some states allow it, some don’t, and you don’t want to accidentally drive on an expired credential.
Daylight-Only and Speed Restrictions
Drivers whose corrected vision sits in the borderline range often end up with a license that limits when and how fast they can drive rather than an outright denial. The pattern is consistent across states: corrected acuity around 20/50 to 20/70 in the better eye tends to trigger a daylight-only restriction, and many states pair it with a 45-mph cap that effectively keeps you off highways.
These restrictions also apply to drivers diagnosed with night-vision problems, even if daytime acuity is fine. Daylight restrictions typically permit driving from half an hour after sunrise to half an hour before sunset. Violating one is treated the same as violating any other license condition.
Some states will lift these restrictions over time. If your vision improves through treatment, a new specialist evaluation plus a passing screening can remove the limit. A few states also drop a daylight restriction after an extended period of accident-free driving, usually two to three years combined with additional evaluation.
Vision in Only One Eye
Having vision in only one eye doesn’t automatically disqualify you. Every state has a pathway for monocular drivers, though the standards are tighter. You’ll generally need 20/40 or better in your sighted eye and a horizontal visual field that varies by state, with requirements ranging from about 55 degrees to over 100 degrees.
Monocular drivers lose depth perception and have a narrower total field, so restrictions are common. Outside mirrors on both sides of the vehicle are frequently required, and some states add a daytime-only limit. A specialist evaluation is almost always mandatory, and the agency may require a driving test to confirm you can change lanes, judge distances, and check blind spots safely.
Bioptic Telescopic Lenses
Bioptic lenses are small telescopes mounted on eyeglasses that let a driver briefly glance through magnification to read signs or spot distant objects, then look through the regular carrier lens for normal driving. Roughly 37 states permit some form of bioptic driving, with wide variation in the rules.
The key split is whether you can use the telescope to pass the initial vision screening or whether you have to meet the acuity standard through the carrier lens alone. Some states allow bioptic users to qualify with acuity as low as 20/200 through the telescope; others insist on 20/40 to 20/60 through the carrier lens and treat the telescope as a supplementary aid. Common conditions include daytime-only driving, magnification caps of 3x to 4x, mandatory behind-the-wheel training of four to eight weeks, and periodic recertification. Check your state’s specific rules before investing in the equipment and training.
Color Vision
Color blindness is much less of an obstacle for a standard license than most people assume. Only about a quarter of states include any color component in their screening, and in most of those it applies only to commercial drivers. The vast majority of states issue standard licenses without testing color at all.
Even where a color test is administered, failing it doesn’t automatically disqualify you. The agency may refer you for a signal-light recognition test where you identify actual traffic lights instead of colored dots on a chart. Traffic signals follow a fixed position pattern (red on top, green on bottom), and road signs use distinctive shapes, which is why color deficiency rarely ends a licensing application.
Older Drivers
States handle senior driver vision checks differently, and there’s no single national age that triggers additional requirements. Some states require in-person renewal with a vision test starting as early as 65, others don’t until 79 or 80, and a few require in-person vision checks for all drivers regardless of age. The National Highway Traffic Safety Administration notes that the American Association of Motor Vehicle Administrators recommends all drivers renew in person and pass a vision test at least every four years.2National Highway Traffic Safety Administration. In-Person Renewal and Vision Test
What usually changes with age is that online and mail-in renewals disappear. States that let you skip the in-person visit for a cycle or two will require you to come in once you hit the applicable age. The screening itself is the same one every other applicant takes. Some states also shorten the renewal cycle for older drivers, so vision gets rechecked more often as a practical matter.
If you’re approaching one of these thresholds, schedule an eye exam a few months before your renewal. Catching a correctable problem early avoids failing at the counter and scrambling for a specialist evaluation before your license expires.
When Online Renewal Skips the Eye Test
Many states allow license renewal online or by mail, and in most cases that means no vision screening for that cycle. States generally cap the number of consecutive remote renewals, typically allowing one or two before an in-person visit with a vision check is required.
Some states also offer an in-between option: your eye care provider submits screening results electronically, which satisfies the vision requirement so you can finish the rest of the renewal online. If your state offers this and your provider participates, it saves you a trip. Ask your eye doctor whether they’re enrolled in your state’s reporting system.
Commercial Drivers Follow Different Rules
If you hold or are applying for a commercial driver’s license for interstate operation, the standards above are only the starting point. Federal regulations require at least 20/40 acuity in each eye individually, a field of vision of at least 70 degrees in each eye, and the ability to recognize red, green, and amber signals.1eCFR. 49 CFR 391.41 – Physical Qualifications for Drivers These are verified during the DOT physical by a certified medical examiner, and drivers who can’t meet the binocular standard in their worse eye may qualify under the alternative vision standard in 49 CFR 391.44.3Federal Motor Carrier Safety Administration. General Vision Exemption Package