Muaj feem xyuam rau cov neeg ntawm cov tsom iav xiav lub teeb
Anti xiav lub teeb tsom iav yog tsim rau hnav thaum siv LED cov khoom siv xws li TV, khoos phis tawj, ncoo thiab xov tooj ntawm tes. Txawm li cas los xij, nws tsis pom zoo kom hnav cov tsom iav xiav lub teeb rau lub sijhawm ntev hauv lub neej niaj hnub, vim tias cov iav tsom iav tsom iav tsom iav qee lub teeb xiav thiab daim duab yuav daj thaum saib. Nws raug nquahu kom nruab ob lub iav tsom iav thiab ib khub ntawm cov tsom iav zoo tib yam rau kev siv txhua hnub, Ib nkawm tsom iav tsom iav yog siv thaum siv LED cov khoom siv digital xws li khoos phis tawj. Lub teeb tiaj tus (tsis muaj degree) anti Blu ray tsom iav yog nrov heev nrog cov neeg siv tsis yog myopia. Lawv tau hnav tshwj xeeb hauv computer chaw ua haujlwm, thiab tau maj mam dhau los ua zam.
