Ko te hangarau mōhio i te iris e ahu mai ana i te iris o te kanohi hei mōhio i te tuakiri, e whakamahia ana ki ngā wāhi e tino hiahiatia ana te noho muna. Ko te hanganga o te kanohi tangata he mea tito mai i te sclera, te iris, te karāhe o te awhi, te retina, me ētahi atu. Ko te iris he wāhanga porowhita i waenganui i te awhi pango me te sclera mā, kei roto he maha ngā ira e honoa ana, ngā miro, ngā karauna, ngā rārangi, ngā kōhao, me ētahi atu. Ngā āhuatanga wāhanga. Heoi anō, i muri i te hanganga o te iris i te wā whanaketanga o te kukune, ka noho tonu ia i roto i te oranga katoa. Mā ēnei āhuatanga ka whakatau te ahurei o ngā āhuatanga o te iris me te mōhio i te tuakiri. Nō reira, ka taea te kī ko te āhuatanga o te iris o te kanohi te mea e mōhiotia ai ia tangata.
Kua whakamātauhia te mōhio ki ngā karu kanohi hei tētahi o ngā tikanga pai mō te mōhio ki ngā āhuatanga koiora, engari nā ngā herenga hangarau ka whakawhāiti i te whakamahinga whānui o te mōhio ki ngā karu kanohi i roto i ngā mara pakihi me ngā mara kāwanatanga. Ka whakawhirinaki tēnei hangarau ki te ahua teitei-taumira i hangaia e te pūnaha mō te aromatawai tika, engari he uaua ki te hopu i tētahi ahua mārama mā ngā taputapu mōhio ki ngā karu kanohi tuku iho nā te mea he papaku te hohonu o te mara. Hei tāpiri, ko ngā tono e hiahia ana ki te wā urupare tere mō te mōhio tonu i te tauine nui, kāore e taea te whakawhirinaki ki ngā taputapu uaua me te kore he arotahi aunoa. Ko te wikitoria i ēnei herenga ka whakanui ake i te rahinga me te utu o te pūnaha.
E matapaetia ana ka kitea te tipu rua-mati o te mākete koiora ā-iri mai i te tau 2017 ki te tau 2024. E matapaetia ana ka tere ake tēnei tipu nā te pikinga o te hiahia mō ngā otinga koiora kore-pa i te wā o te mate urutā covid-19. Hei tāpiri, kua piki ake te hiahia mō ngā otinga aroturuki me te tautuhi pa nā te mate urutā. He otinga kounga teitei, he iti te utu, he pai hoki te kounga o te arotahi whatu a ChuangAn mō ngā tono whakaahua i roto i te mohio koiora.
