Dab tsi yog astigmatism thiab nws puas tuaj yeem tshem tawm

2024 Tus sau: Malcolm Clapton | [email protected]. Kawg hloov kho: 2023-12-17 03:58

Qee lub sij hawm tib neeg tsis txawm paub tias lawv muaj qhov muag tsis pom kev.

Dab tsi yog astigmatism

Astigmatism yog dab tsi? - qhov no yog defocusing (lub Greek lo lus stigmate txhais tau tias "point", lub prefix ib qhia tsis zoo) ntawm lub zeem muag, tshwm sim los ntawm qhov tseeb hais tias cov duab ntawm lub cornea los yog lens ntawm lub qhov muag yog cuam tshuam.

Feem ntau, ob lub cornea thiab lub lens muaj qhov sib npaug, sib npaug ntawm cov duab ntawm ib lub voj voog. Ua tsaug rau qhov no, cov rays ntawm lub teeb dhau los ntawm lawv tau tsom mus rau ntawm ib qho chaw (hu ua focal point) ntawm retina, thiab peb pom cov duab meej.

Yog hais tias lub cornea los yog lo ntsiab muag yog nkhaus unevenly, lub teeb dhau los ntawm lawv yuav tsis refracted zoo. Ob peb lub ntsiab lus tseem ceeb tshwm sim ntawm retina ib zaug. Vim li no, nws zoo li yog daim duab ua ntej ob lub qhov muag los yog triples, muaj indistinct outlines, nws cov ntsiab lus sib koom ua ke.

Qhov no yog dab tsi lub ntiaj teb zoo li los ntawm lub qhov muag ntawm ib tug neeg nrog thiab tsis muaj astigmatism.

Vim li cas astigmatism txaus ntshai?

Qhov muag plooj, qhov muag tsis pom kev tsis zoo nyob hauv nws tus kheej. Tab sis defocus muaj lwm yam tshwm sim ntawm Astigmatism: Ua, Hom, thiab Cov tsos mob.

• Qhov muag nrawm nrawm. Nws tuaj yeem nyuaj rau tus neeg uas muaj astigmatism nyeem lossis ua haujlwm nrog lub computer.
• Thaum ntxov tsos ntawm wrinkles. Qhov no yog vim qhov yuav tsum tau mus tas li squint thiaj li yuav saib ib yam dab tsi.
• Mob taub hau.
• Txiav, lwm yam tsis xis nyob hauv qhov muag.
• Nyuaj pom yav tsaus ntuj thiab hmo ntuj.
• Muaj kev pheej hmoo ntawm kev tsim strabismus.

Tsis tas li ntawd, astigmatism feem ntau ua ke nrog myopia thiab hyperopia, qhov muag tsis pom kev uas yuav tsum tau kho.

Qhov twg astigmatism tuaj ntawm?

Cov duab ntawm lub cornea thiab lo ntsiab muag yog ib qho tshwj xeeb ntawm tus neeg. Qee cov neeg muaj astigmatism congenital: cov neeg zoo li no yuav tsis txawm kwv yees tias ib yam dab tsi tsis ncaj ncees lawm nrog lawv lub zeem muag, vim tias txij li thaum yau lawv tau ua rau pom daim duab "blurry".

Lwm tus tsim astigmatism nrog lub hnub nyoog. Feem ntau qhov no tshwm sim tom qab muaj mob yav dhau los, qhov muag raug mob los yog kev phais ntawm lub cev ntawm lub zeem muag.

Tab sis cov version uas astigmatism tuaj yeem tshwm sim lossis ua phem dua yog tias koj nyeem thaum tsaus ntuj lossis saib TV ntau dhau yog qhov lus dab neeg.

Yuav ua li cas kom paub astigmatism

Cov tsos mob ntawm qhov muag tsis pom kev yog qhov muag plooj - ob qho tib si lus thiab piv txwv. Yog li ntawd, txoj hauv kev zoo tshaj plaws kom tsis txhob plam tawm ntawm astigmatism yog mus ntsib kws kho mob txhua xyoo rau kev kuaj xyuas niaj hnub. Thiab sab laj nrog kws kho mob rau cov lus qhia yog tias koj muaj teeb meem tsis pom kev.

Txhawm rau txheeb xyuas qhov ua tau astigmatism, tus kws kho qhov muag yuav ua ntau qhov kev ntsuam xyuas Astigmatism.

• Kuaj koj qhov pom kev acuity. Qhov no yog ua tiav los ntawm kev siv lub rooj tshuaj ntsuam xyuas tus qauv: koj yuav raug nug kom sau npe cov ntawv uas tau piav qhia ntawm qhov muag ob peb meters deb ntawm koj.
• Ua keratometry. Qhov no yog lub npe ntawm cov txheej txheem uas qhov curvature ntawm lub cornea yog ntsuas.
• Tshawb xyuas cov refraction. Refraction qhia meej npaum li cas lub cornea thiab lens refract lub teeb hla lawv. Lawv tshuaj xyuas nws nrog kev pab ntawm cov cuab yeej - phoropter thiab retinoscope (nrog rau qhov ntsuas no tus kws kho mob yuav ci ntsa iab hauv qhov muag).

Cov kev tshawb fawb no pab tsis tau tsuas yog txheeb xyuas astigmatism, tab sis kuj paub yuav ua li cas kho nws.

Yuav ua li cas kho astigmatism

Muaj plaub txoj hauv kev astigmatism los kho astigmatism. Qhov twg yuav muaj txiaj ntsig hauv koj rooj plaub, tsuas yog tus kws kho mob txiav txim siab.

1. Cov ntsiab lus

Tus kws kho mob ophthalmologist yuav sau ntawv rau koj kom hnav tsom iav nrog lub ntsej muag tshwj xeeb cylindrical lo ntsiab muag uas cuam tshuam lub teeb nkag rau hauv koj lub qhov muag hauv txoj hauv kev xws li txhawm rau txhawm rau qhov curvature ntawm cornea lossis lens.

2. Tiv thaiv lo ntsiab muag

Nyob rau ntawm lub cornea, lub lo ntsiab muag, raws li nws yog, txawm tawm nws nto, ua rau nws tusyees nkhaus. Qee qhov xwm txheej, cov iav tiv thaiv tuaj yeem pab them nyiaj rau astigmatism zoo dua li cov tsom iav.

3. Orthokeratology

Qhov no yog lub npe rau kev siv cov tshuaj tiv thaiv ib ntus tshwj xeeb. Lawv hnav thaum hmo ntuj. Thaum pw tsaug zog, ortholens kho cov duab ntawm lub cornea. Lawv raug tshem tawm thaum sawv ntxov.

Cov nyhuv ntawm kev kho yog ib ntus, kav ntev li ob peb teev, piv txwv li, txog thaum yav tsaus ntuj. Thaum tsaus ntuj, koj yuav tau muab tso rau ntawm ortholes dua.

4. Laser tsis pom kev kho

Qhov no yog ib txoj hauv kev uas tus kws phais siv lub laser los kho cov duab ntawm lub cornea. Yog li, koj tuaj yeem tshem ntawm astigmatism mus ib txhis.

Qhov nrov tshaj plaws yog ob hom kev kho laser:

• Laser keratomileusis. Nrog nws cov kev pab, irregularities raug tshem tawm tsuas yog los ntawm lub puab nto ntawm lub cornea.
• Photorefractive keratectomy. Qhov kev ua haujlwm no yuav kho qhov curvature ntawm cornea ob leeg sab nraud thiab sab hauv.