Ko tō mātou kara pīrahi i whakaritea ki te whakamana i ngā huringa nui o te whakamataki ina whai take. Nā ngā āhuatanga optika o te rauemi, ka taea te kite i te tiitoko e whakamatakitaki ana, ko tēnā he pai noa i te waahanga whakamatau, nā tērā ka whiwhi i te wāhanga matihiko. Ko ētahi atu mea, kua hangaia ō mātau kara i runga i ngā whare hāpai hou e whakaae ana ki ngā ture whawhai-ā-iwi mō ngā rautaki hauora. Nō reira, ko ia tuatahitia ko te kara pīrahi e mahi ana, engari ko ia hoki e pai ake mo ngā mate urutā me ngā kaimahi hauora. Ko tō mātau whakaaro ā-muri hei whakapakari hoki i te pai o te hauora, koinei te mea nā kua whiwhi i te whakamana matihiko pai ake.