Medically reviewed by Shaun Larsen, OD, Doctor of Optometry, Southern College of Optometry. Low vision rehabilitation and contact lens specialist.

Last clinically reviewed: July 2026 | Next scheduled review: January 2027 | Driver licensing rules change frequently, so this page is reviewed twice yearly.

Important: this article is general information, not legal advice and not a determination of your eligibility. Vision standards are set state by state and change. Always verify current requirements with your own state licensing authority and with a low vision specialist before making any decision about driving.

The short answer: it depends what “legally blind” means in your case. US legal blindness covers everyone with best-corrected acuity of 20/200 or worse in the better eye, or a visual field of 20 degrees or less. That is a wide range of function. Someone at exactly 20/200 with a full visual field may qualify for a restricted licence through a bioptic telescope programme in most states. Someone with severely constricted fields will not, regardless of acuity, because field standards apply independently. And someone with no light perception cannot drive anywhere in the United States.

Learn the facts and figures about driving with a vision impairment. Although strong eyesight is obviously necessary for safe driving, each state in the United States sets its own threshold for “normal” vision acuity. While these requirements can vary, in order to pass a vision test for a basic driver’s license, a person’s vision must be at least 20/40 in at least one eye, with correction if needed. Most states apply the standard to the better eye or to both eyes tested together, not to each eye separately.

In addition, most states have a procedure for obtaining a driver’s license for visually impaired drivers even if you don’t match the visual requirements. This method typically comprises obtaining thorough reports from an optometrist or ophthalmologist, scheduling periodical reexaminations or updates, additional driving training, a more difficult road test, and imposing permit restrictions.

An unrestricted licence simply means no conditions are attached to it: any place, any distance, day or night, any road, any legal speed, in an ordinarily equipped vehicle. It does not mean you can drive without glasses. If you need correction to reach the standard, your licence carries a corrective-lens restriction, and driving without them is a licence violation. The most prevalent restriction is that corrective lenses must be worn when driving.

The most popular exception for those with serious vision impairments recognizes the benefits of daytime driving but prohibiting nighttime or low-light driving. State-by-state restrictions on vision testing include mandating the use of corrective lenses, forbidding freeway driving, limiting the region in which driving is permitted, and installing more mirrors (left and right outside, wide-angle, panoramic, and fender-mounted). Montana issues an area-restricted driver’s license, which specifies things like driving from home to the grocery store, driving for medical reasons, or driving to church. Most states have laws allowing drivers to use telescopic lenses and demonstrate skill with various types of visual aids and blind driving systems when necessary.

Why daylight-only is the most common restriction. It is rarely about acuity. Night driving depends heavily on contrast sensitivity and glare recovery, and both are degraded by cataract, macular disease and glaucoma well before Snellen acuity falls. Neither is tested by any state vision screening, which is why a driver can pass the chart test and still be genuinely unsafe after dark. If you find night driving disproportionately difficult relative to your daytime vision, that is a recognised pattern and worth raising specifically.

Understanding the terminology for legally blind driving

Legal Blindness and Driving

When we hear the word “blind,” we usually think of someone who is unable to see anything, a person who suffers from a condition known as no light perception. Only a small minority of people who are legally blind have no light perception at all; the great majority retain some usable vision. As a result, there are a variety of blindness classifications to assist us in comprehending what a person can and cannot see.

The scores linked with the Snellen eye chart, a document with which most of us are familiar, are used to quantify these categories. The Snellen chart is placed 20 feet away from a person who covers one eye and tries to read the symbols with the other. You are said to have 20/20 or perfect vision if you can read the digits on the eighth line. When the second number is significantly higher, we can see how far a person’s vision differs from the norm. A person with 20/50 vision, for example, must be 20 feet away to see what someone with perfect vision sees from 50 feet away.

Understanding this can help you grasp what it means to be legally blind. You must have a visual acuity of 20/200 or worse with your best correction on to be legally blind (glasses or contacts). Note that the US statutory definition has a second limb that is frequently overlooked: a visual field of 20 degrees or less in the better eye also meets the definition, regardless of acuity. Someone with advanced glaucoma or retinitis pigmentosa may read the 20/20 line and still be legally blind on field criteria, and that second limb is often the more relevant one for driving.

The World Health Organization uses a separate classification from the US statutory one, and the two should not be mixed. Under ICD-11, based on presenting acuity in the better eye: no impairment is 20/40 or better; mild is worse than 20/40 to 20/70; moderate is worse than 20/70 to 20/200; severe is worse than 20/200 to 20/400; and blindness is worse than 20/400, or a field constricted below 10 degrees. The WHO system does not define “low vision” as a numeric threshold at all: clinically, low vision means vision that cannot be fully corrected by lenses, medication or surgery and that interferes with everyday activity.

Unless you know about the most advanced, sight-enhancing medical equipment or “adaptive technology for blind drivers” on the market today, driving while legally blind may seem like an oxymoron. By carefully analyzing their vision and providing the appropriate medical equipment to enhance it, we enable our legally blind patients do a variety of crucial things, such as driving.

What actually determines eligibility

Four separate things are assessed, and you must pass each of them independently. Meeting the acuity standard does not compensate for failing the field standard.

• Visual acuity, through the carrier lens and, where a bioptic is used, through the telescope as well. These are two separate thresholds and both must be met.
• Visual field. Commonly a horizontal extent of 100 to 140 degrees depending on the state. For context, a normal monocular field extends roughly 100 degrees temporally, 60 degrees nasally, 60 degrees up and 70 to 75 degrees down; the binocular field spans around 200 degrees horizontally. This is the criterion that most often disqualifies people with glaucoma and retinitis pigmentosa, and it is independent of how well they read the chart.
• Stability of the condition. Progressive disease usually triggers shorter licence terms and mandatory re-examination.
• Demonstrated on-road competence, usually a road test, and for bioptic programmes a formal training course first.

Bioptics do not help peripheral field loss. This point is worth stating clearly because it is a common misunderstanding. A telescope magnifies a small central area; it does nothing for a constricted field, and the carrier lens is what you rely on for continuous navigation. For advanced glaucoma or retinitis pigmentosa, where the loss is peripheral, a bioptic is generally not the answer and other adaptive strategies apply.

Legally blind driving with bioptic glasses or “telescope glasses”

Bioptic driving is a type of driving that combines the patient’s general vision with intermittent spotting through a small telescopic system to increase the patient’s distant vision sharpness. About 95% of the time, bioptic patients drive with their own vision carrier. The patient swiftly peers through the bioptic telescope to offer details such as street signs, traffic lights, and far-off objects when utilizing it. The brief use of the bioptic telescope is similar to the fast glance back in the rearview mirror that all drivers use. Bioptic driving necessitates meticulous fitting of the equipment, as well as significant training in both bioptic use and behind-the-wheel driver training.

The trade-offs, stated honestly, since these devices are frequently oversold: magnification narrows the field of view proportionally, so a 4x telescope shows a much smaller area; there is a ring scotoma, a blind ring around the telescope image; apparent motion is magnified, which takes practice to adapt to; the telescope reduces light transmission, which is one reason night driving is usually prohibited; and the systems are conspicuous. Success depends far more on training than on the device itself. Published studies of bioptic licence candidates report a median of roughly 20 hours of behind-the-wheel instruction before the road test, with some states mandating 30-hour courses.

A multidisciplinary approach is required to determine whether a visually impaired person can become a bioptic driver. Low vision specialists, physicians, driving rehabilitators, occupational therapists, and orientation and mobility teachers are all possible candidates. The procedure comprises a variety of checks and balances to weed out people who aren’t likely to be safe bioptic drivers while identifying those who are.

Legally blind driving laws

Is it legal for blind people to drive in the US?

Driving when legally blind necessitates the use of appropriate vision aids, or adaptive driving technology, common sense, and knowledge of applicable state laws. Most visually challenged people, for example, prefer to drive during the day and in excellent weather because the light is better in those settings. Because state law governing the use of telescopic lenses and other vision-enhancing devices is highly complex and varies greatly, it’s critical to understand your state’s specific restrictions. On their website, Prevent Blindness, a major national volunteer eye health and safety group, has compiled a comprehensive list of state vision screening and “standards for a license to drive.” It’s a wonderful location to start learning about your state’s legislation.

Here are some examples of how certain states have enacted driving regulations based on those two variables, as well as the usage of vision-improving medical devices like bioptics.

Low vision patients in Texas can use a bioptic telescope to obtain a restricted driver’s license. They are qualified for a license even if their vision is as low as 20/200 without the telescope and 20/40 with the telescope. They also have a peripheral field requirement.

In Illinois, the practitioner (eye doctor) is required to report an unsuitable driver to the Department of Motor Vehicles; however, there is no similar requirement in Missouri. If they believe the patient should be tested or limited, they can contact an anonymous hotline.

Mandatory reporting is worth understanding generally. A number of states require or permit clinicians to report drivers they believe are unsafe, and several require the driver to self-report a change in vision. Failing to disclose a known qualifying change can invalidate a licence and, after a collision, create both insurance and liability problems. If your vision has changed materially, check your state’s reporting rules rather than assuming the obligation sits only with your clinician.

In the United States, state legislation enabling bioptic (a bioptic is a telescope and carrier lens driving system) driving began more than three decades ago. Published counts of how many states permit bioptic driving vary by source and by date, ranging from roughly 40 to 45 states plus the District of Columbia as of 2026. Because the number changes and the conditions differ enormously, treat any count as orientation only and verify with your own state licensing authority. Regrettably, the laws differ significantly from one state to the next. States such as Indiana have established regulations for vision levels, training, and continuing vision monitoring. Some states permit bioptic driving but do not specify the training requirements for behind-the-wheel drivers.

Typical parameters across permitting states, to give a realistic sense of the range: carrier lens acuity commonly between 20/60 and 20/200; through-telescope acuity commonly 20/40 to 20/70; a separate visual field requirement; a formal training programme, sometimes 30 hours; a specialised road test; and restrictions that frequently include daylight only, speed limits between 35 and 55 mph, and in some states geographic or road-type limits.

Other states ignore the problem entirely, while others, such as Florida, have enacted “Catch-22 Laws” that allow patients to drive while wearing bioptics, but not to pass the vision test. We anticipate that, in the future, clinical experience and ongoing research will combine to bring the structured training program pioneered in Indiana to all states. Furthermore, we require graded licensing procedures that allow for restricted permits for those for whom bioptics is not the greatest option.

Visual acuity is the parameter that varies least between states: 20/40 is close to universal for an unrestricted licence, with a small number of states setting a slightly different threshold. Verify the current figure for your state rather than relying on any published summary, including this one.

Some states also require drivers to have specific visual field ranges, which mainly focus on the horizontal temporal field. Our eyes do not only see straight ahead. We have a visual field instead (also referenced as a field of vision). Vision acuity refers to how much detail we can see, whereas visual field refers to how far we can see when looking straight ahead. Healthy eyes allow us to have a horizontal field of vision that is fairly wide (155 degrees or more). A single healthy eye spans roughly 160 degrees horizontally, and both eyes together approximately 200 degrees, with a central overlap of about 120 degrees that provides depth perception. Many states require a motorist to have a horizontal field of vision of 100 degrees or more in at least one eye. This allows drivers to focus attention on what is in front of them while catching enough critical facts on either side of their car.

The horizontal visual field has a wider range of requirements. Visual field testing is not necessary in sixteen states unless the individual has been referred to an optometrist after failing a visual acuity test or the visual acuity test was done using a visual aid like telescopic lenses.

This gap matters more than it appears. Where field testing is only triggered by failing the acuity test, a driver with advanced glaucoma or retinitis pigmentosa who reads the chart perfectly may never have their field measured at all, despite field loss being the more relevant impairment for driving. If you have a condition affecting peripheral vision, formal perimetry is worth arranging through your eye specialist regardless of whether your state requires it.

How Can Blind People Drive With New Technology?

New accessibility features and technology in many recent vehicles can make driving easier for some people with reduced vision. An important caveat applies to everything in this section: none of these systems changes your licence eligibility, and none is a substitute for meeting your state’s vision standards. They are convenience and safety aids for people who already qualify to drive.

New adaptive vehicle technologies like tactile feedback systems where the steering wheels and pedals have vibrations or audio cues to alert drivers of lane departures or obstacles.

Audio-Based Navigation with enhanced GPS systems that provide turn-by-turn directions tailored for visually impaired users.

Haptic Gauges: Dashboards with tactile or auditory feedback for speed, fuel levels, and warnings.

There are also Advanced Driver-Assistance Systems (ADAS).

Systems like:

• Collision Avoidance: Sensors and cameras detect pedestrians, vehicles, or obstacles, issuing alerts (e.g., Subaru’s EyeSight, Tesla Autopilot).
• Lane-Keeping Assist: Alerts drivers if they drift out of lanes.
• Self-Parking Technology: Helps with parking via automated steering.

What ADAS does and does not do. These are driver assistance systems, designed on the assumption that a fully attentive, adequately sighted driver is monitoring the road. They are not designed or validated for drivers with impaired vision, they do not detect every hazard, performance degrades in rain, fog and low light, and every manufacturer requires the driver to remain in control at all times. Relying on them to compensate for vision you do not have is unsafe and, if it contributed to a collision, would not be a defence.

Of course there are also self driving cars now, which aren’t really visually impaired driving aids because they aren’t really driving. Current commercially available autonomous services operate as robotaxis in defined geographic areas with no consumer licence implications. Consumer vehicles marketed with “self-driving” or “autopilot” branding remain driver-assistance systems requiring an attentive licensed driver, whatever the marketing name suggests. Genuinely driverless personal vehicles that a blind person could own and be transported by are not yet generally available.

Licensing & Driving Laws for Visually Impaired Individuals

Present Limitations: The majority of U.S. states and foreign countries disallow individuals completely blind from fetching a regular driving permit. This is because there is a prevalent concern that granting such people permission to operate a motor vehicle is unsafe. Some U.S. states and most other countries allow what is termed a restricted driver’s license for a person with partial eyesight. Bioptic telescopes are one device, for instance, that some states allow blind individuals to use from behind the wheel.

Advocacy Work: Groups like the National Federation of the Blind (NFB) say that assistive technologies (for instance, auditory cues and haptic feedback) should empower more people with visual impairments to drive safely and successfully.

Legal Issues: A number of court cases (for instance, NFB vs. Arizona Department of Transportation) have sought to achieve fairer vision-testing standards that don’t automatically bar low-vision drivers from passing.

Self-Driving Cars & Accessibility Laws

Compliance with the Americans with Disabilities Act (ADA):

Developers of AV tech (example: Waymo, Cruise) are under pressure to guarantee their vehicles are fully accessible (in ways such as: having voice-controlled interfaces, using braille, being compatible with wheelchairs).

The Department of Transportation (DOT) of the United States is assessing if autonomous vehicles (AVs) are required to comply with the American Disabilities Act (ADA) when functioning as public transportation.

NFB’s Campaign for Accessible Nonvisual Media: The NFB promotes federal policies and laws that stipulate that the driverless cars of tomorrow can and must be operated without screens and other visual interfaces.

Is it really safe to be driving legally blind?

The fight about how much freedom to give individuals vs how to keep them safe is ongoing, and it extends far beyond driving and vision.

There is a substantial peer-reviewed literature on vision and crash risk, and it does not support a simple story in either direction. Visual acuity alone is a relatively weak predictor of crash involvement, which is part of why acuity-only screening has been criticised. Visual field loss shows a more consistent association, particularly binocular field loss, and measures such as contrast sensitivity and the Useful Field of View test correlate better with crash risk than acuity does. Studies of licensed bioptic drivers have generally found crash rates broadly comparable to, though in some analyses modestly higher than, matched control drivers, which is the evidence underpinning current licensing programmes.

The honest summary is that the standards most states use test the thing that predicts risk least well, and that a person’s real-world driving safety depends on field, contrast, glare recovery, scanning behaviour, route selection and self-regulation as much as on the chart line they read.

Nonetheless, establishing strict national vision and vision testing standards for noncommercial passenger vehicle driver licensing would eliminate state-to-state inconsistencies, make comparing accident rates in different states easier, and could help eliminate poor vision as a cause of motor vehicle accidents if properly established and strictly enforced.

Practical next steps if you want to explore driving

• Get a full low vision assessment, including acuity, contrast sensitivity, glare testing and formal visual field measurement. The field test matters most and is the one most often skipped.
• Check your own state’s current requirements directly with the licensing authority, including whether it runs a bioptic programme and what the carrier and telescope thresholds are.
• Ask specifically whether a bioptic is appropriate for your condition. It helps central acuity loss, such as macular degeneration or Stargardt disease. It does not help peripheral field loss from glaucoma or retinitis pigmentosa.
• Budget for training, not just the device. Success depends on it, and some states mandate 30 hours.
• Check your insurance position once licensed with restrictions, and make sure your insurer knows.
• Be honest about self-regulation. Many licensed low vision drivers restrict themselves further than their licence requires, avoiding rain, dusk, unfamiliar routes and rush hour. That is good practice, not failure.

If driving is not going to be possible, that is worth confronting directly rather than deferring, because loss of driving independence is strongly associated with reduced social participation and depression. Orientation and mobility training, paratransit eligibility, rideshare accessibility programmes and route planning support all exist, and a low vision service can arrange them.

Do you find yourself struggling with your vision and are in need of low-vision devices or professional services providers? Let us help! Visit our Low Vision Clinic today to talk with one of our optical professionals.

Frequently asked questions

Can you drive if you are legally blind?

Sometimes, depending on why you meet the definition. Legal blindness spans a wide range of function. Someone at 20/200 acuity with a full visual field may qualify for a restricted licence through a bioptic programme in most states. Someone meeting the definition through field constriction usually will not, because field standards apply independently and bioptics do not help peripheral loss. Nobody with no light perception can drive in the United States.

What is the worst vision you can have and still drive?

For an unrestricted licence, 20/40 is close to universal. Many states issue restricted licences between roughly 20/50 and 20/70, commonly daylight only. States operating bioptic programmes may license drivers with carrier lens acuity as low as 20/200, provided acuity through the telescope reaches the state threshold, field requirements are met, and training and road testing are completed. Field standards apply throughout and are not waived by good acuity.

Do bioptic telescopes make driving safe?

They restore access to specific visual information, principally road signs and signals, for people with central vision loss. Studies of licensed bioptic drivers have found crash rates broadly comparable to matched controls, though results vary between analyses. Safety depends heavily on training, on appropriate self-restriction, and on the underlying condition being suitable in the first place.

Will my insurance cover me if I drive with a restricted licence?

Provided you hold a valid licence and comply with every restriction on it, you are driving legally and normal cover applies. Driving outside your restrictions, for example at night on a daylight-only licence, can void cover and create personal liability after a collision. Tell your insurer about the restriction rather than assuming it is covered.

Do I have to tell the DMV my vision has changed?

In many states, yes. Self-reporting requirements and clinician reporting rules vary considerably, and some states have both. Check your own state’s rules. Failing to disclose a qualifying change can invalidate your licence and cause serious problems after an incident.

Sources

1. American Academy of Ophthalmology. Vision Requirements for Driving. aao.org.

2. Prevent Blindness. Vision screening and standards for a license to drive, by state. preventblindness.org.

3. Owsley C, McGwin G. Vision and driving. Vision Res. 2010;50(23):2348-2361.

4. Owsley C, Ball K, McGwin G, et al. Visual processing impairment and risk of motor vehicle crash among older adults. JAMA. 1998;279(14):1083-1088.

5. Bowers AR, Apfelbaum DH, Peli E. Bioptic telescopes meet the needs of drivers with moderate visual acuity loss. Invest Ophthalmol Vis Sci. 2005;46(1):66-74.

6. Owsley C, McGwin G, Elgin J, Wood JM. Visually impaired drivers who use bioptic telescopes: self-assessed driving skills and agreement with on-road driving evaluation. Invest Ophthalmol Vis Sci. 2014;55(1):330-336.

7. Peli E, Peli D. Driving with Confidence: A Practical Guide to Driving with Low Vision. World Scientific; 2002.

8. World Health Organization. International Classification of Diseases, 11th Revision: vision impairment including blindness. who.int.

9. US Social Security Administration. Disability Evaluation Under Social Security, Section 2.00, Special Senses and Speech. ssa.gov.

10. Federal Motor Carrier Safety Administration. Vision standard for commercial driver qualification, 49 CFR 391.41. fmcsa.dot.gov.