Eliminate glare light from other vehicles at night. Excellent anti glare night vision glasses for driving purpose. 2) Soothe and reduce eyestrain in daytime. 3) Block harmful light rays with excellent optical clarity. impact-resistance and scratch-resistance. 4) It can reduce glare, mirror-like effects and reflections to a minimum. These darker shades are intended primarily to cut through the glare and reduce eyestrain in moderate-to-bright conditions like driving under sunlight. 5) The yellow lens provides less overall brightness protection, but excel in moderate-to-low level light conditions. 6) It provides excellent depth perception, they also enhance contrasts in tricky, flat-light conditions, which makes them perfect for driving at night, in snowy and cloudy days.