Cov txheej txheem:
Video: Refractive keratoplasty yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
keratoplasty . refractive keratoplasty Kev tshem tawm ntawm ib ntu ntawm lub pob txha los ntawm tus neeg mob lossis tus neeg pub khoom, uas yog zoo li tus xav tau curvature thiab ntxig rau ntawm cov khaubncaws sab nraud povtseg ntawm tus neeg tau txais lub cornea (keratophakia) lossis dhau lub pob txha (keratophakia) txhawm rau hloov lub pob txha curvature thiab kho qhov muag tsis raug.
Ua kom pom qhov no, qhov kev phais refractive txhais li cas?
Refractive qhov muag phais yog qhov muag tsis tseem ceeb phais siv los txhim kho cov refractive lub xeev ntawm lub qhov muag thiab txo qis los yog tshem tawm kev vam khom ntawm cov tsom iav lossis cov tsom iav. Qhov no tuaj yeem suav nrog ntau txoj hauv kev phais Kev hloov kho ntawm lub cornea (keratomileusis), lens implantation lossis hloov lub lens.
Puas yog phais refractive tib yam li Lasik? Nrog PRK, koj lub qhov muag kws phais tshem tawm cov txheej sab saum toj ntawm lub pob kws, hu ua epithelium. Koj kws phais Tom qab ntawd siv cov lasers los kho lwm cov khaubncaws sab nraud povtseg ntawm lub cornea thiab txhim kho qhov tsis xwm yeem curvature hauv koj lub qhov muag. Nrog LASIK , koj lub qhov muag kws phais siv lasers los yog ib tug me me hniav los tsim ib tug me me nrov plig plawg nyob rau hauv koj lub cornea.
Yog li ntawd, hom kev phais refractive sib txawv yog dab tsi?
Hom kev phais kom kho qhov yuam kev cuam tshuam xws li:
- LASIK (laser nyob rau hauv-situ keratomileusis)
- Photorefractive keratectomy (PRK)
- Radial keratotomy (RK)
- Astigmatic keratotomy (AK)
- Automated lamellar keratoplasty (ALK)
- Laser thermal keratoplasty (LTK)
- Conductive keratoplasty (CK)
- Intracorneal nplhaib (Intacs)
Qhov phais phais puas zoo tshaj?
- PRK yog suav hais tias yog los ntawm ntau yam los ua thawj tiam ntawm kev kho qhov muag laser. PRK tuaj yeem kho qhov ze ze, pom deb, thiab astigmatism.
- SMILE laser phais qhov muag yog qib siab tshaj plaws FDA pom zoo cov txheej txheem kho qhov muag kho qhov muag rau hnub tim.
Pom zoo:
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Dab tsi yog cov khoom siv hauv lub cev zom zaub mov thiab lawv lub luag haujlwm yog dab tsi?
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Refractive index ntawm prism yog dab tsi?
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Yuav ua li cas koj sim rau refractive yuam kev?
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Dab tsi yog qhov refractive index ntawm garnet?
Gemstone Refractive Index: Phau Ntawv Qhia Kom Paub Ntau Yam Refractive Index Ob Chav Refraction Grossular Garnet 1.734-1.759 tsis muaj Tsavorite Garnet 1.734-1.759 tsis muaj Leuco Garnet 1.734-1.759 tsis muaj Hessonite Garnet none 1