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Magalasi a 1.56 FSV Blue Block HMC Blue Coating Optical
Lens ya Blue Block, timaitchanso Blue Cut Lens kapena UV420 Lens. Ndipo ili ndi mitundu iwiri yosiyanasiyana ya lens ya buluu block, imodzi ndi lens ya buluu block, mtundu uwu ndi block blue light ndi zinthu; ina ikuwonjezera blue block coating kuti ilepheretse blue light. Makasitomala ambiri amasankha lens ya buluu block, chifukwa ndi yotsika mtengo komanso yosavuta kuwona momwe block imagwirira ntchito, kungofunika cholembera cha buluu light ndikokwanira.
