The single most effective thing you can do when bright headlights hit your eyes is shift your gaze to the white fog line on the right edge of the road. This keeps you oriented in your lane without looking directly into the light source. But that’s just the in-the-moment fix. There are several ways to reduce how much oncoming and trailing headlights affect you, from cleaning your windshield to checking your own eye health.
Where to Look When Headlights Hit You
Your instinct when blinded by oncoming high beams is to stare right at them or squeeze your eyes. Both make things worse. Instead, look toward the white line marking the right edge of the road. This line gives you a reliable guide for staying in your lane while keeping the bright light in your peripheral vision, where it’s less disabling. You don’t need to fixate on the line, just let it anchor your gaze until the other vehicle passes.
Avoid the temptation to flash your own high beams in retaliation. If you temporarily blind the other driver, you’ve created a situation where neither of you can see. Slowing down slightly gives you more reaction time while your eyes recover.
Why Recovery Takes Longer as You Age
After a burst of bright light, your eyes need time to readjust to the dark. Research from the University of Alabama at Birmingham found that total glare recovery times stay relatively stable until about age 56, after which they become significantly prolonged. This means a 60-year-old driver may spend noticeably more seconds functionally blind after an oncoming car passes compared to a 35-year-old.
If you’re over 55 and finding night driving increasingly uncomfortable, that’s a real physiological change, not just a perception. Reducing your speed at night and increasing your following distance are practical ways to compensate for slower recovery.
Your Windshield May Be Making It Worse
A dirty windshield dramatically amplifies glare. Dust, oils from your hands, and a hazy film from dashboard plastics off-gassing in the sun all collect on the inside of the glass. This cloudy layer scatters incoming light, turning a single headlight into a diffuse wash of brightness across your entire field of vision.
Most people clean the outside of their windshield regularly but forget the interior. Use an automotive glass cleaner (not a household spray, which can leave streaks) and a clean microfiber towel. For stubborn buildup, a clay bar or glass-specific polish will remove residue that regular cleaning misses. You’ll likely be surprised at how much difference this makes on your next night drive.
Exterior scratches and pitting from years of road debris also scatter light. If your windshield is heavily worn, even a perfect interior cleaning won’t fully solve the problem.
How Auto-Dimming Mirrors Work
If headlights from behind are your main problem, an auto-dimming rearview mirror is one of the best investments you can make. These mirrors use two light sensors: one facing forward to measure ambient brightness and one facing rearward to detect sudden increases from trailing vehicles. When the rear sensor picks up glare exceeding a certain threshold, a low-voltage current triggers a chemical reaction in an electrochromic gel layer sandwiched in the mirror glass. This gradually tints the mirror, cutting light transmission from about 70% down to roughly 10%.
Many newer cars come with this feature standard. If yours doesn’t, aftermarket auto-dimming mirrors are available and typically plug into existing wiring. For side mirrors, you can manually adjust them to deflect headlights away from your eyes, or apply anti-glare film designed for automotive mirrors.
Night Driving Glasses: Do They Help?
Yellow-tinted “night driving” glasses are widely marketed, but their usefulness is limited. They work by filtering blue light, which can reduce the perceived harshness of LED and HID headlights. However, they also reduce overall light reaching your eyes, which can make it harder to see unlit objects like pedestrians or animals. For most people, the tradeoff isn’t worth it.
Anti-reflective coatings on your regular prescription glasses, on the other hand, make a meaningful difference. These coatings reduce internal reflections within the lens that create ghost images and halos around lights. If you wear glasses and haven’t opted for anti-reflective coating, adding it to your next pair is one of the simplest upgrades for night driving comfort.
Astigmatism and Starburst Effects
If headlights don’t just look bright but appear to send out long spikes or rays of light, you may have astigmatism. This common condition occurs when the cornea is shaped more like a football than a basketball, with one curve steeper than the other. Light entering the eye focuses at two different points instead of one, creating starbursts, halos, or streaks around bright sources. The effect is most noticeable at night when your pupils are dilated and more of the irregularly shaped cornea is exposed.
Dry eyes make this worse. When the surface of the cornea dries out, it scatters light even more, intensifying halos and blurriness. Glasses or contact lenses correct standard astigmatism by bending light back to a single focal point. People with irregular astigmatism, where the corneal surface is uneven across multiple areas, typically need specialty contact lenses for a sharper correction.
If you notice starbursts getting worse or appearing for the first time, it’s worth getting an eye exam. Uncorrected or under-corrected astigmatism is one of the most common and fixable causes of headlight discomfort.
Check Your Own Headlight Alignment
While you’re dealing with other people’s headlights, it’s worth making sure yours aren’t blinding anyone either. Misaligned headlights point too high or too far to the side, and they’re more common than you’d think. Hitting a pothole, replacing a bulb, or even loading heavy cargo in the trunk can shift the aim.
To check alignment yourself, park on level ground facing a flat wall about 25 feet away. Turn on your low beams and note where the brightest cutoff line falls. The top of the beam pattern should sit at or just below the height of the headlight lens center, no more than about 2 inches above horizontal at that distance. If the beams are noticeably high or uneven, most headlights have a small adjustment screw accessible under the hood that lets you tilt the housing down. Any auto shop can do a precise alignment if you’d rather not do it yourself.
Adaptive Driving Beams Are Coming
One reason headlights feel brighter than they used to is that they are. Modern LED and HID headlights produce significantly more light than older halogen bulbs, and when paired with SUVs and trucks that sit higher off the ground, the beam hits sedan drivers closer to eye level.
A technology called adaptive driving beams (ADB) addresses this at the source. These headlight systems use cameras and sensors to automatically shade portions of the beam that would hit other drivers’ eyes while keeping the rest of the road fully illuminated. They’re common in Europe and were recently approved for use in the United States after NHTSA issued a final rule allowing them on new vehicles. It will take years for ADB-equipped cars to make up a significant share of traffic, but the technology represents a real long-term solution to the arms race of ever-brighter headlights.
In the meantime, the combination of a clean windshield, proper eyewear correction, an auto-dimming mirror, and the habit of looking toward the right road edge will handle the vast majority of situations where bright headlights make night driving uncomfortable.