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1.59 PC Bifocal Invisible Photochromic Grey HMC Optical arotahi
I tenei wa, e rua nga momo rauemi arotahi kei runga i te maakete, he mea karaihe tetahi, he rauemi kapia tetahi.Kua wehea nga rauemi resin ki te CR-39 me te polycarbonate (matea PC).
Ko nga arotahi bifocal he arotahi e rua nga waahanga whakatikatika i te wa kotahi, ka whakamahia te nuinga ki te whakatika i te presbyopia.Ko te waahi tawhiti kua whakatikahia e te arotahi bifocal ka kiia ko te waahi tawhiti, ko te waahi tata ka kiia ko te waahi tata me te waahi panui.I te nuinga o te wa, he nui te rohe tawhiti, no reira ka kiia ko te kiriata matua, he iti te rohe tata, no reira ka kiia ko te kiriata-iti.
