This type of coating blocks excessive light from entering the eye:
Benefits of anti-reflective eyewear
Glasses wearers often wonder whether anti-reflective coating is a necessary investment. In general, the benefits of anti-reflective eyewear justify the added costs. The primary benefit of anti-reflective eyewear is the prevention of glare and reflections on lenses, blocking excess light that can lead to pupil strain. Anti-reflective eyewear also eliminates distractions from halos while driving at night.
Anti-reflective eyewear is particularly beneficial when driving at night. The anti-glare lens coating reduces the halo effect that occurs around headlights and streetlights in the dark.
This type of eyewear is also recommended for people who work with computers all day. The lens coating reduces eyestrain from battling glare on a monitor, allowing people to work on a computer for longer periods without difficulty.