First of all, from the light transmittance analysis, the light transmittance of green film is high, reaching 98.6%. The light transmittance of blue film is not as good as that of green film. The light transmittance of the blue film reaches 96.8%. Therefore, the green coated lens has higher light transmittance than the blue coated lens. Secondly, considering the influence of blue coating and green coating on eyes, blue lenses can't filter strong light, which is harmful to eyes. Dr Janet Sparrow, professor of ophthalmology at Columbia University Medical Center in new york, USA, is studying the relationship between blue-violet light exposed to sunlight and eye diseases that lead to blindness. She said: "With the increase of age, there will be more and more photosensitive compounds in some retinal cells. The wavelength of the blue-purple part of the spectrum can activate these compounds to the maximum extent and promote the release of harmful free radicals (harmful compounds produced by body oxidation reactions). Generally speaking, green membrane is more advanced and complicated than blue membrane and purple membrane. The antireflection passband is wider and flatter, and the antireflection valley is in the center of the visible spectrum (so it appears green). Among them, the emerald coating technology of Beijing Yanma Technology Co., Ltd. is the most representative, and its green light has the effect of massaging the eyes, thus achieving the effect of eye protection. Use relevant inspection instruments (crystal ball, money detector, electric pen, etc.) for scientific inspection. It is proved that the special mirror for St. Kyle's computer has the functions of radiation protection, ultraviolet protection, waterproof, anti-fouling, anti-static, eye protection and anti-fatigue. Again, from the perspective of wearing comfort, because the green coating is more natural, it is more comfortable to wear than the blue one. The green coating technology will not make you feel uncomfortable when you wear it for a long time, while the blue coating lens will make your eyes tired when you wear it for a long time. Unfortunately, most coated glasses in China now use blue coating, because technically, blue coating is simpler and cheaper than green coating. Experts suggest that blue coated lenses should never be used for comfort or health reasons. St. Kyle's exclusive patented technology, yellow-green double-color coating technology of radiation protection glasses is the ultimate of radiation protection glasses, and products have come out at present. You can try.