These computer glasses can effectively block ultraviolet radiation, provide UV400 protection, and filter harmful blue light (wavelength is between 400nm and 450nm). Little color difference, it is suitable for people who work long hours on computers, tablets, games, on the phone or on television.As the best indoor glasses for long hours of computer use, the blue light blocking glasses can reduce symptoms of eye strain during prolonged computer exposure. Don't worry about eye fatigue, blurred vision and headache. Go enjoy your digital time and a deep and restful sleep.Durable material frame, which has the characteristics of super lightness, abrasion resistance, low coefficient of friction, etc. . It can effectively prevent damage to eyes and face caused by fracture and friction of glasses frame in movement, metal hinge is more stable.We can see that one part of the test area directly irradiated by blue light has turned blue, and the other part shadowed by the glasses has not turned blue. The glasses are specially designed to filter out some of the harmful blue light. Wearing blue light filter glasses while working with digital devices can help reduce the risk of developing eye-related problems.