Driving at night can be a challenge, with reduced visibility and dazzling headlights making conditions even trickier. As an optometrist, one of the most common complaints I hear from clients is how bright and blinding modern headlights feel. So, what causes this problem, and how can you improve your comfort and safety on the road?

The Science Behind Bright Headlights
Years ago, headlights had a warm, orangey glow because they were traditional bulbs emitting light from the red end of the light spectrum. These older lights were gentler on the eyes and didn’t cause as much glare. However, modern vehicles now use xenon or LED headlights, which emit light at the blue end of the spectrum. This difference is key to why they feel so dazzling.
Blue light scatters more as it passes through your eye’s pupil. In low-light conditions, your pupils naturally enlarge to let in more light, amplifying this scattering effect. The result? Headlights appear brighter and can cause discomfort, glare and even temporary night blindness for some drivers.
How to Combat Dazzling Headlights
If you’ve found yourself struggling with bright headlights, there are practical steps you can take to improve your comfort and confidence while driving at night:
Have Regular Eye Examinations
Your optometrist can check for any underlying conditions, such as cataracts or dry eyes, which may worsen glare. Early diagnosis and treatment plans can make a significant difference to your night-time driving experience.
Keep Your Prescription Up to Date
Clear vision is essential for safe driving. An outdated spectacle prescription can make glare seem worse and compromise your ability to see clearly in low-light conditions. Regular check-ups will ensure your vision is the best it can be.
Consider Specialist Lenses
Innovative lens treatments, like Nikon’s ‘SeeCoat Drive’ are designed specifically to reduce glare from headlights by specifically targeting that blue end of the light spectrum. These lenses can make a noticeable difference to your comfort and clarity when driving at night.
Clean Your Glasses and Windscreen
It may sound simple, but clean lenses and a streak-free windscreen can significantly reduce glare. Dirt and smudges scatter light further, increasing the discomfort caused by bright headlights.
Upgrade Your Lens Technology
Just as you wouldn’t rely on a phone with 10-year-old technology, don’t let your spectacles fall behind. Modern lens advancements can optimise your vision, giving you confidence behind the wheel no matter the conditions.
Image from Master Glasses showing Nikon's 'SeeCoat Drive' lenses
Final Thoughts
Night driving presents unique challenges, but dazzling headlights don’t have to be one of them. With regular eye care, the right lenses and a few simple adjustments, you can feel safer and more comfortable on the road.
If you’re struggling with glare or haven’t had your eyes checked recently, book an appointment with your optometrist. Let’s ensure you’re seeing your best and enjoying the drive—day or night!

Hayley Brunsden Founder | Optometrist
CBTR Opticians, Buckinghamshire
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