Tsis ntev los no, ntau yam teeb meem ntawm qhov muag tau dhau mus rau cov menyuam yaus. Ib tug ntawm lawv yog astigmatism. Nws yog dab tsi tiag? Qhov tseeb, nws tsis tuaj yeem hu ua kab mob, nws yog qhov tsis zoo ntawm lub lens (cornea), uas muaj qhov tsis zoo. Vim li no, lub teeb rays tsis tsom, uas txhais tau hais tias cov duab yog fuzzy. Thaum lub sij hawm tsim ntawm tus me nyuam lub cev, tus kab mob tuaj yeem tshwm sim ntawm txhua theem. Muaj ob qho tib si astigmatism ntawm ob lub qhov muag, thiab ib qho.
Ib lub ntsej muag zoo nkauj yog kheej kheej, tso cai rau lub teeb ci kom pom tseeb thiab xa cov duab zoo rau lub retina. Thaum lub cornea zoo li ib tug melon, lub teeb rays yog refracted txawv, uas tsim ib tug tsis ncaj ncees lawm lub zeem muag ntawm ib puag ncig cov khoom.
Diagnosis astigmatism. Tus kab mob tshwm sim li cas?
Qhov feem ntau cov noob caj noob ces astigmatism. Qhov muag raug mob lossis phais tuaj yeem ua rau nws daim ntawv tau txais. Cov niam txiv tuaj yeem mloog nws tus kheej rau qhov tseeb tias tus menyuam qhov muag poob: nws leans ntawm qhov khoom los tshuaj xyuas nws,feem ntau squints. Ib tug me me tej zaum yuav muaj kev chim siab thiab qaug zog ntxiv rau qhov keeb kwm yav dhau los no.
Yuav kho li cas?
Nws yog qhov zoo dua tsis kho, tab sis kho astigmatism. Dab tsi yog "yog"? Nws tag nrho yog nyob ntawm cov teeb meem uas twb muaj lawm. Tsawg astigmatism (txog 0.5 D) tsis muaj myopia thiab hypermetropia feem ntau tsis kho. Yog tias qib ntawm astigmatism siab dua, nws raug nquahu kom siv tsom iav nrog cov lo ntsiab muag tshwj xeeb.
Qhov tseem ceeb ntawm kev kho mob yog tias tus kws kho mob, raws li kev tshuaj xyuas, xaiv lub cylindrical tivthaiv nrog txoj haujlwm raug raws li axis. Qhov no yuav hloov lub refraction ntawm lub rays, thiab tus me nyuam yuav pom meej.
Txoj kev phais ntawm kev kho yog ua tau tsuas yog tom qab qhov kawg tsim ntawm lub cev, uas yog, tsis ntxov tshaj li tus neeg 20.
Nrog astigmatism txij thaum yug los, tus menyuam feem ntau tsis txawm paub tias nws pom qhov yuam kev. Nws tsis muaj dab tsi los piv nws txoj kev xav. Nws, feem ntau yuav, tsis txawm xav txog cov kab mob xws li astigmatism. Nws yog dab tsi thiab yuav kho li cas, tej zaum cov niam txiv lawv tus kheej tsis paub. Tab sis tus kws tshaj lij uas tsim nyog yuav txiav txim siab tus kab mob no thiab qhia txoj hauv kev los daws qhov teeb meem.
Yog tias koj mus txog qhov teeb meem ntawm kev kho astigmatism kom tsim nyog, tom qab ntawd dhau sijhawm nws yuav tuaj yeem hnov qab txog tsom iav. Muaj tseeb tiag, nrog rau qib siab, kev kho laser ntawm lub pob ntseg tsis xws luag tsis tuaj yeem muab nrog.
Nws tseem ceeb heev uas yuav tau pib kho raws sijhawm. Txij li thaum nrog qhov txo qis hauv qhov pom kev pom, amblyopia tuaj yeem txhim kho, feem ntau nrog astigmatism. Nws yog dab tsi? Qhov no yog ib tug tub nkeeg qhov muag syndrome, ntau precisely, ib tug txo nyob rau hauv kev ua hauj lwm ntawm lub hlwb ntawm lub paj hlwb cortex. Hauv tsev kawm ntawv, tus menyuam yuav ntsib teeb meem loj.
Kev kho mob hauv tsev nws tuaj yeem siv cov cuab yeej tshwj xeeb thiab cov kev pab cuam. Cov tsom iav kho mob uas muaj qhov tsis yog panacea rau kev kho qhov muag pom kev. Ntawm chav kawm, lawv nce qhov tob ntawm optical tsom. Tab sis lawv cov txiaj ntsig zoo ntawm astigmatism tsis tau muaj pov thawj tshawb fawb.
Kev npaj muaj blueberries, ntau yam kev noj haus, yog multivitamin complexes, tsis yog tshuaj. Ophthalmologists sau cov tshuaj vitamin ib txwm siv, koj yuav tsum tsis txhob suav rau nws cov txiaj ntsig zoo kawg nkaus.
Vim lawv lub hnub nyoog, cov menyuam yaus tsis paub tias lawv muaj qee yam teeb meem tsis pom kev. Yog li ntawd, koj yuav tsum mus ntsib kws kho mob tsis tu ncua, txawm tias tsis muaj kev tsis txaus siab. Qhov no yuav tso cai rau koj tshem tawm lossis pib kho tus kabmob raws sijhawm.
