![Kev nyeem keratometry txhais li cas? Kev nyeem keratometry txhais li cas?](https://i.answers-medical.com/preview/medical-health/14091970-what-do-keratometry-readings-mean-j.webp)
Video: Kev nyeem keratometry txhais li cas?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Keratotry ( K ) yog qhov ntsuas ntawm txoj kab nkhaus ntawm lub qhov muag; corneal curvature txiav txim siab lub zog ntawm lub khob iav. Tus Thawj Xibfwb IOL tseem ntsuas qhov ntev axial thiab lwm yam kev ntsuas qhov muag (xws li lub qhov tob hauv chav hauv ntej thiab ntsuas dawb-rau-dawb) thiab suav nrog K nyeem.
Ib yam li ntawd, nws tau nug, dab tsi yog qhov keratometry nyeem?
Heev tiaj los yog ntxhab heev nruab nrab keratometry nyeem ntawv (piv txwv li, 48.00 D) Sib txawv nruab nrab keratometry nyeem ntawv nruab nrab ntawm qhov muag ntau dua 1.50 D. K1 thiab K2 nrog lub zog sib txawv ntau dua 3.00 D. Astigmatism rau ob lub qhov muag ntau dua 4.00 D.
Ib sab saum toj no, k1 thiab k2 hauv Keratometry yog dab tsi? Keratotry tau ntsuas hauv 2 meridians: uas yog, tiaj tus keratometry ( K1 ) thiab txias keratometry ( K2 ). Tus nqi K tau xam raws li qhov nruab nrab ntawm K1 thiab K2.
Hauv qhov no, dab tsi yog K nyeem ncaj?
Kev Pib Pib Nkag Nkag Xaiv los ntawm Keratometry. Ntsuas lub hauv paus txoj kab nkhaus nkhaus thiab txheeb xyuas qhov flat K nyeem ntawv (qhov tsawg tshaj plaws dioptric tus nqi). Piv txwv: Tiaj K = 43.00 @ 180, 44.00 @ 90. (The rov k yog siv los ua tus taw tes los xaiv lub hauv paus nkhaus los ntawm INITIAL BASE CURVE SELECTION CHART)
Cov neeg uas muaj astigmatism pom dab tsi?
Astigmatism yog tshwm sim los ntawm lub ntsej muag tsis xwm yeem Nrog lub ntsej muag puag ncig, lub qhov muag tuaj yeem tswj tau qhov teeb pom kev zoo uas nkag mus, ua kom yooj yim dua saib meej. Txawm li cas los xij, qhov muag tsis pom kev zoo ib yam, txhais tau hais tias lub teeb uas nkag mus tau faib tsis sib luag, yog li ua rau lub qhov muag tsis pom kev.
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