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1.74 Ahu ʻaʻahu ʻulaʻula HMC Optical lens
ʻO ka maka aniani 1.74, ʻo ia ka lens me ka index refractive o 1.74, ʻo ia ka mea me ka helu refractive kiʻekiʻe loa ma ka mākeke, a ʻo ka mea me ka mānoanoa o ka lens thinnest. ʻO nā ʻāpana ʻē aʻe ke kūlike, ʻoi aku ka kiʻekiʻe o ka helu refractive, ʻoi aku ka lahilahi o ka lens, a ʻoi aku ka pipiʻi. Inā ʻoi aku ka nui o ka myopia ma mua o 800 degere, ua manaʻo ʻia he myopia ultra-kiʻekiʻe, a he kūpono ka helu refractive o 1.74.
