Do crystal glasses prevent blue light?

Crystal eyes are not blue proof. Anti-blue eye is to add an anti-blue factor into the lens substrate to absorb harmful blue light in life and realize the protection purpose of blue light blocking.

Crystal is a pure crystal of natural mineral, and its composition is silica crystal, which has long been used as a raw material for making glasses. Because optical glass could not be made at that time, and there was no better optical material than crystal, people at that time thought that crystal glass was the best.