Do Blue Light Lenses Help With Night Driving?
Before we examine their effect on night driving, let’s just reiterate the basics of blue light glasses and how they work. Blue light blocking glasses filter out short-wavelength blue light - the type emitted by screens and other electronic devices. Blue light can allegedly damage your retinal cells, but zFORT® blue light blocking glasses can help to filter this out.
Some blue light glasses (including zFORT® ones) have clear lenses with inbuilt blue light blocking technologies. However, blue light glasses from brands like Gunnar are yellow-tinted - another way of counteracting the negative effects of blue light. This means that they can double up as night driving glasses.
What Are Night Driving Glasses?
Night driving glasses are glasses with non-prescription, tinted lenses that range in color from light yellow to amber. Originally designed to increase contrast and clarity to help shooters hit their targets, yellow-tinted glasses help in the same way on poorly-lit roads. These glasses have a special coating that stop too much light from reflecting off the lenses - increasing visual acuity and reducing distractions from inside the car.
How Do Night Driving Glasses Work?
Night time driving glasses reduce glare by scattering and filtering out blue light, similar to zFORT® glasses technology. Blue light has the shortest wavelength and the largest amount of energy of any kind of visible light. Unlike types of light with longer wavelengths, blue light is more likely to cause glare when it enters the eye.
Do Night Driving Glasses Really Work?
Some wearers of night driving glasses report that they’re better able to see at night while wearing them. However, visual tests indicate that night driving glasses do not improve night vision, and do not help drivers see obstacles any faster than they would without them. If you are required to wear prescription glasses to drive, do not switch them out for non-prescription yellow night driving glasses; they are not a direct substitute - more of an additional measure for people with good eyesight already.
Do Blue Light Glasses Work?
According to numerous studies from universities like Houston and Harvard, the benefits of blue light glasses can include less eye strain, improved eye health, improved sleep quality, improved posture, and decreased headaches. Not all blue light glasses have anti-glare properties (unlike Arise HD Prescription Lenses), so they’re not direct substitutes for night driving glasses, but some brands’ use of yellow tint can potentially be useful in situations where refined visual acuity is necessary.
To summarise: blue light glasses, while using similar technologies, do not directly help with night driving. The key feature of night driving glasses is their anti-reflective coating, not their yellow tint.