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1.74 Koti Kahurangi HMC Optical arotahi
Ko te mohiti kanohi 1.74 te tikanga ko te arotahi he 1.74 te taupū whakaata, koinei te mea he nui rawa te tohu whakaata i runga i te maakete, me te mea he angiangi te matotoru o te arotahi. Ko etahi atu tawhā e rite ana, ko te teitei ake o te tohu whakaata, ka angiangi te arotahi, ka nui ake te utu. Mena he nui ake i te 800 nga nekehanga te tohu o te myopia, ka kiia ko te myopia ultra-high myopia, a he pai te tohu tohu o te 1.74.
