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1.56 Ngā arotahi whatu HMC tapawhā kikorangi whakamua
He karāhe arotahi maha ngā karāhe arotahi whakamua. Kāore i rite ki ngā karāhe pānui tuku iho me ngā karāhe pānui arotahi-rua, kāore ngā karāhe arotahi whakamua e ngenge ki te whakarerekē tonu i te arotahi o te kanohi ina whakamahia ana ngā karāhe arotahi-rua, kāore hoki he rārangi wehewehe mārama i waenga i ngā roa arotahi e rua. Mā te mau i te āhua whakamarie, ataahua, ka noho hei whiringa pai rawa atu mā te hunga presbyopia.
