400-450nm blue light will slowly hurt our eyes.
Various electronic devices, screens, etc. are everywhere, bringing a lot of unnatural blue light, which is difficult to avoid.
Under the influence of blue light, prolonged eye use (reading, etc.) can cause fatigue, dryness and even headaches.
At night, blue light can also affect the production of melatonin, affect the quality of sleep, and severely cause insomnia.
Blue light blocking glasses can fliter out a certain proportion of blue light,anti eyestrain,eye dryness,avoid headche,help sleep,give you a better experience in work,play and sleep.
These glasses can block 97% blue light,effectively alleviate eyestrain.The lens will become orange along with blocking percentage up,suitable for long time working,reading or playing.
If it's not acceptable with the color cast,we have the same model with 25% blocking lens almost without color cast.
Premium material - Frame: High-grade Plastic ; Lens: Polycarbonate.Lightweight and durable.
If you have any issues,contact with us and we will provide you with a satisfactory reply.
I bought these for my wife. They lens is a good size, fully covering the eye. The hinges are spring assisted. The frame feels strong. I looked through both lens, and both were clear. I think they will work well and I will look for a mens style from this seller when I need a pair.