ʻO nā helu ma kāu ʻōlelo kuhikuhi aniani e pili ana i ke ʻano o kou mau maka a me ka ikaika o kāu ʻike.Hiki iā lākou ke kōkua iā ʻoe e ʻike inā loaʻa iā ʻoe ʻike maka, ʻike maka a i ʻole astigmatism - a i ke ʻano he aha.
Inā ʻike ʻoe i ka mea e nānā ai, hiki iā ʻoe ke noʻonoʻo i nā helu a me nā pōkole ma kāu palapala 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 hema.
● ʻO OD kou maka ʻākau.He pōkole ʻo OD no ka oculus dexter, ka huaʻōlelo Latin no ka "maka ʻākau."
● ʻO OS kou maka hema.He pōkole ʻo OS no ka oculus sinister, Latin no ka "maka hema."
He kolamu i kapa ʻia ʻo "OU."ʻO kēia ka pōkole nooculus uterque, ʻo ia hoʻi "nā maka ʻelua" ma ka ʻōlelo Latina.He mea maʻamau kēia mau huaʻōlelo pōkole i nā ʻōlelo kuhikuhi no nā aniani, nā leka uila a me nā lāʻau lapaʻau maka, akā ua koho kekahi mau kauka a me nā kauka e hoʻololi i kā lākou ʻōlelo kuhikuhi makaRE (maka ʻākau)aLE (maka hema)ma kahi o OD a me OS.
Poe (SPH)
Hōʻike ka Sphere i ka nui o ka mana 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 ka hōʻailona hōʻemi (–),he makapō ʻoe.
● Inā he hōʻailona hoʻohui (+) ka helu ma lalo o kēia poʻomanaʻo.he ike maka.
Poʻo (CYL)
Hōʻike ka cylinder i ka nui o ka mana lens e pono aiastigmatism.E hahai mau ana ia i ka mana sphere ma ke kuhikuhi maka aniani.
Loaʻa paha i ka helu i loko o ke kolamu he hōʻailona hōʻemi (no ka hoʻoponopono ʻana i ka astigmatism ʻike kokoke) a i ʻole kahi hōʻailona hoʻohui (no ka astigmatism ʻike mamao).
Inā ʻaʻohe mea i ʻike ʻia ma kēia kolamu, ʻaʻohe ou astigmatism, a i ʻole he liʻiliʻi loa kou degere o ka astigmatism ʻaʻole pono e hoʻoponopono ʻia.
Axis
Hōʻike ʻo Axis i ka meridian lens i loaʻa ʻole ka mana cylinder ipololei astigmatism.
Inā loaʻa i kahi ʻōlelo kuhikuhi maka aniani ka mana cylinder, pono e hoʻokomo i kahi waiwai axis, e hahai ana i ka mana cylinder.
Ua wehewehe ʻia ke axis me kahi helu mai 1 a 180.
● Ua like ka helu 90 me ka meridian kupaa o ka maka.
● ʻO ka helu 180 pili i ka meridian ākea o ka maka.
Hoʻohui
"Hoʻohui" ʻo ia kahoʻohui i ka mana hoʻonuii hoʻohana ʻia i ka ʻaoʻao lalo o nā lens multifocal e hoʻoponopono i ka presbyopia - ka ʻike maka maoli e hiki mai ana me ka makahiki.
ʻO ka helu i ʻike ʻia ma kēia ʻāpana o ka ʻōlelo kuhikuhi he mana "plus", ʻoiai inā ʻaʻole ʻoe e ʻike i kahi hōʻailona hoʻohui.ʻO ka mea maʻamau, mai +0.75 a +3.00 D a ʻo ia ka mana like no nā maka ʻelua.
Prisma
ʻO kēia ka nui o ka mana prismatic, i ana ʻia i nā diopters prism ("pd" a i ʻole he huinakolu ke kākau lima ʻole ʻia), i kuhikuhi ʻia e uku noalignment makapilikia.
ʻO kahi hapa liʻiliʻi wale nō o nā ʻōlelo kuhikuhi maka aniani e loaʻa kahi ana prisma.
I kēia manawa, hōʻike ʻia ka nui o ka prisma ma nā ʻāpana ʻōlelo Pelekane metric a i ʻole fractional (0.5 a i ʻole ½, no ka laʻana), a hōʻike ʻia ke kuhikuhi o ka prisma ma ka ʻike ʻana i ke kūlana pili o kona "kumu" (ka mānoanoa loa).
Hoʻohana ʻia nā pōkole ʻehā no ke kuhikuhi prism: BU = base up;BD = kumu i lalo;BI = base in (i ka ihu o ka mea hoʻohana);BO = kumu i waho (i ka pepeiao o ka mea hoʻohana).
Inā makemake ʻoe i nā ʻike hou aʻe e pili ana i nā lens optical, e ʻoluʻolu e komo i kā mākou ʻaoʻao mahttps://www.universeoptical.com/stock-lens/e loaʻa i ke kōkua hou aku.