![Qhov chaw focal point hauv myopia nyob qhov twg? Qhov chaw focal point hauv myopia nyob qhov twg?](https://i.answers-medical.com/preview/medical-health/13947160-where-is-the-focal-point-in-myopia-j.webp)
Video: Qhov chaw focal point hauv myopia nyob qhov twg?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Lub qhov muag kho qhov muag yog qhov ua kom muaj zog, overconverging lub teeb nyob rau hauv pem hauv ntej ntawm lub retina ( qhov muag / qhov muag ). Lub qhov muag lub cev tsis muaj zog thiab nyob hauv qab sib hloov lub teeb yog li focal taw tes nyob tom qab retina (hyperopia/pom kev).
Hais txog qhov no, qhov chaw nyob ntawm qhov muag nyob qhov twg?
Feem ntau, lub teeb tau tsom mus rau qhov retina ntawm qhov chaw hu ua focal taw tes . Ib tus neeg tsis pom kev qhov muag yog ntev dua ntawm pem hauv ntej mus rau tom qab ntau dua li ib txwm qhov muag ua rau lub teeb tsom mus rau pem hauv ntej ntawm lub qhov muag es tsis txhob ncaj qha mus rau nws. Qhov no ua rau nws nyuaj rau pom cov khoom uas nyob deb.
Tom qab ntawd, lo lus nug yog, vim li cas lub focal point yuav tsum nyob rau ntawm retina? Lub zog ntawm lub lens yog xaiv los ntawm kev sib piv lub lens ' focal taw tes nrog lub qhov muag nyob deb taw tes . Qhov no ua rau lub teeb pom kev sib txawv los ntawm qhov raug, yog li cov duab ntawm cov khoom nyob deb sib xws nrog qhov chaw ntawm retina.
Kuj paub, dab tsi tshwm sim rau focal ntev hauv myopia?
Myopia yog nyob ze qhov muag pom. Vim tsis tu ncua focussing nyob ze ntawm cov khoom (zoo li nyeem phau ntawv) nyob rau hauv xyoo ntawm lub neej lub qhov muag lens tau nyam nrog txo focal ntev (compressed xeev) thiab tsis tuaj yeem so. Yog li qhov muag lo ntsiab muag tau qis dua myopia vim nyob rau hauv lub xeev compressed ntev….
Vim li cas qhov pom kev deb tsis meej hauv myopia?
Myopia tshwm sim yog tias lub qhov muag ntev dhau los lossis lub qhov muag (qhov pom meej pem hauv ntej ntawm lub qhov muag ) yog nkhaus heev. Yog li ntawd, lub teeb nkag mus rau hauv qhov muag tsis tsom kom raug, thiab nyob deb Cov khoom zoo li qhov muag plooj. Txawm li cas los xij, qhov muag kuj tseem tuaj yeem tshwm sim hauv cov neeg laus vim qhov pom kev ntxhov siab lossis kev noj qab haus huv xws li ntshav qab zib.
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