Appropriate anti-blue light glasses are usually not harmful to the eyes, while inappropriate anti-blue light glasses may cause visual fatigue. Anti-blue light glasses are glasses that can be used to filter out blue light, in addition to reducing ultraviolet radiation, and are mainly used to prevent eye irritation from outdoor ultraviolet rays as well as blue light emitted by electronic screens. In general, wearing the right anti-blue light glasses will not cause any harm to the organism, and can also reduce the radiation of light for the eyes. Wearing unsuitable anti-blue light glasses for a long time may lead to visual fatigue, causing dry eyes, swelling and pain. The above situation should be considered whether it is caused by the inappropriate focal length of the anti-blue light glasses, it is recommended to go to a professional organization for examination, and if necessary, re-lenses.