Pili nā helu ma kāu palapala kauoha maka aniani i ke ʻano o kou mau maka a me ka ikaika o kou ʻike. Hiki iā lākou ke kōkua iā ʻoe e ʻike inā he ʻike kokoke, ʻike mamao a i ʻole ka astigmatism — a i ke ʻano hea.
Inā ʻike ʻoe i ka mea e nānā ai, hiki iā ʻoe ke hoʻomaopopo i nā helu a me nā pōkole ma kāu pakuhi kuhikuhi.
OD vs. OS: Hoʻokahi no kēlā me kēia maka
Hoʻohana nā kauka maka i nā pōkole "OD" a me "OS" e kuhikuhi i kou mau maka ʻākau a me kou mau maka hema.
● ʻO OD kou maka ʻākau. He pōkole ʻo OD no oculus dexter, ʻo ia ka huaʻōlelo Latina no "maka ʻākau."
● ʻO OS kou maka hema. ʻO OS ka pōkole no oculus sinister, ʻo ka Latina no "maka hema."
Hiki i kāu palapala kuhikuhi hihiʻo ke loaʻa kahi kolamu i kapa ʻia ʻo "OU." ʻO kēia ka pōkole nomaka ʻōpū, ʻo ia hoʻi "nā maka ʻelua" ma ka ʻōlelo Latina. He mea maʻamau kēia mau huaʻōlelo pōkole ma nā lāʻau lapaʻau no nā aniani, nā aniani hoʻopili a me nā lāʻau lapaʻau maka, akā ua koho kekahi mau kauka a me nā keʻena lapaʻau e hoʻomaikaʻi i kā lākou mau lāʻau lapaʻau maka ma ka hoʻohana ʻanaRE (maka ʻākau)a meLE (maka hema)ma kahi o OD a me OS.
Pōʻai (SPH)
Hōʻike ka sphere i ka nui o ka mana o ka lens i kuhikuhi ʻia e hoʻoponopono i ka ʻike kokoke a i ʻole ka ʻike mamao. Ana ʻia ka mana o ka lens ma nā diopters (D).
● Inā hele mai ka helu ma lalo o kēia poʻomanaʻo me kahi hōʻailona hoʻēmi (–),ua ʻike kokoke ʻoe.
● Inā he hōʻailona hoʻohui (+) ka helu ma lalo o kēia poʻomanaʻo,ʻike mamao ʻoe.
Paukū (CYL)
Hōʻike ka paukūʻolokaʻa i ka nui o ka mana o ke aniani e pono ai noka astigmatism. Hahai mau ia i ka mana poepoe ma ke kuhikuhi ʻana i nā maka aniani.
Hiki i ka helu ma ke kolamu cylinder ke loaʻa kahi hōʻailona minus (no ka hoʻoponopono ʻana i ka astigmatism kokoke) a i ʻole kahi hōʻailona plus (no ka astigmatism ʻike mamao).
Inā ʻaʻohe mea e ʻike ʻia ma kēia kolamu, ʻaʻohe ou astigmatism, a i ʻole he liʻiliʻi loa kou kekelē o ka astigmatism ʻaʻole pono e hoʻoponopono ʻia.
ʻAkisi
Hōʻike ʻo Axis i ka meridian lens i loaʻa ʻole ka mana cylinder eka astigmatism pololei.
Inā hoʻokomo ʻia ka mana o ka cylinder i loko o kahi palapala kauoha maka aniani, pono nō hoʻi e hoʻokomo i kahi waiwai axis, kahi e hahai ana i ka mana o ka cylinder.
Ua wehewehe ʻia ke axis me kahi helu mai 1 a 180.
● Pili ka helu 90 i ka meridian kū pololei o ka maka.
● Pili ka helu 180 i ka meridian ʻākea o ka maka.
Hoʻohui
ʻO "Hoʻohui" kai hoʻohui ʻia ka mana hoʻonuii hoʻopili ʻia ma ka ʻaoʻao lalo o nā aniani multifocal e hoʻoponopono i ka presbyopia - ke ʻano maka mamao kūlohelohe e kū mai ana me ka ʻelemakule.
ʻO ka helu e kū nei ma kēia ʻāpana o ke kauoha he mana "plus" mau ia, ʻoiai inā ʻaʻole ʻoe e ʻike i kahi hōʻailona plus. Ma ke ʻano laulā, e loaʻa ia mai +0.75 a i +3.00 D a e like ka mana no nā maka ʻelua.
ʻO Prism
ʻO kēia ka nui o ka mana prismatic, i ana ʻia ma nā diopters prism ("pd" a i ʻole kahi triangle ke kākau lima ʻia), i kuhikuhi ʻia e uku noka hoʻonohonoho ʻana o nā makanā pilikia.
He hapa liʻiliʻi wale nō o nā kauoha maka aniani e komo pū ana me kahi ana prism.
Ke loaʻa, ua hōʻike ʻia ka nui o ka prism ma nā anakahi metric a i ʻole nā anakahi hapa ʻōlelo Pelekania (0.5 a i ʻole ½, no ka laʻana), a ua hōʻike ʻia ke kuhikuhi o ka prism ma ka hoʻomaopopo ʻana i ke kūlana pili o kona "kumu" (ka lihi mānoanoa loa).
ʻEhā mau pōkole i hoʻohana ʻia no ke kuhikuhi prism: BU = kumu i luna; BD = kumu i lalo; BI = kumu i loko (i ka ihu o ka mea e ʻaʻahu ana); BO = kumu i waho (i ka pepeiao o ka mea e ʻaʻahu ana).
Inā he mau hoihoi hou kāu a i ʻole makemake ʻoe i ka ʻike ʻoihana hou aku e pili ana i nā aniani optical, e ʻoluʻolu e komo i kā mākou ʻaoʻao ma ohttps://www.universeoptical.com/stock-lens/e loaʻa hou aku ke kōkua.