Blue Light is considered much more harmful and powerful than UV rays since our eyes do not have a natural way to shield against it. It reduces the production of melatonin which signals our body it's time to sleep...

Usually, after turning 40 years old, human eyes will gradually become impaired, and gradually people can't clearly see things in close distance. Reading glasses are then needed. They solved the...

If you are nearsighted or farsighted, or wear sunglasses a lot, then transition lenses are definitely the way to go. You don't need to prepare two or more pairs of glasses to exchange. When being outside in bright light, the lenses usually turn dark gray or brown.