Video: Dab tsi yog qhov teeb meem cuam tshuam?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A refractive teeb meem yog qhov muag pom tshwm sim los ntawm kev hloov pauv ntawm lub qhov muag, uas tiv thaiv lub teeb los ntawm kev tsom mus rau qhov muag sai, tsim cov duab tsis meej. Tsom iav yog txheej txheem khoov ntawm lub teeb uas tshwm sim thaum nws hla lub khob thiab lub lens.
Ib yam li ntawd, koj yuav nug, qhov muag tsis pom kev ntawm lub qhov muag yog dab tsi?
Qhov yuam kev cuam tshuam txhais tau tias cov duab ntawm koj lub qhov muag tsis kho lub teeb kom raug, ua rau cov duab tsis meej. Cov hom tseem ceeb ntawm refractive yuam kev yog qhov muag (nearsightedness), hyperopia ( kev pom kev deb ), presbyopia (tsis pom kev ze nrog lub hnub nyoog), thiab astigmatism.
Tsis tas li, puas yog glaucoma yog qhov teeb meem cuam tshuam? Refractive kev ua yuam kev yog hom kev pom kev tsis zoo hauv tib neeg thiab cuam tshuam nrog kev pheej hmoo ntawm kev txhim kho lwm qhov kev pom teeb meem , suav nrog thawj lub kaum qhib glaucoma.
Ib yam nkaus, tib neeg nug, koj yuav kho qhov yuam kev cuam tshuam li cas?
Refractive yuam kev raug kho nrog tsom iav, tsom iav qhov muag, lossis phais. Cov tsom iav yog qhov yooj yim tshaj plaws thiab muaj kev nyab xeeb tshaj plaws kev kho . Cov iav qhov muag tuaj yeem muab kev pom dav dua; txawm li cas los xij lawv cuam tshuam nrog kev pheej hmoo kis mob. Refractive phais tas mus li hloov cov duab ntawm lub pob muag.
Plaub qhov yuam kev tseem ceeb ntawm kev cuam tshuam yog dab tsi?
Cov plaub feem ntau feem ntau refractive tsis raug yog: myopia (nearsightedness): nyuaj rau pom cov khoom nyob deb kom meej; hyperopia (farsightedness): nyuaj rau pom cov khoom ze kom meej; astigmatism: qhov muag tsis pom kev tshwm sim los ntawm lub ntsej muag nkhaus tsis sib xws, npog meej ntawm lub qhov muag.
Pom zoo:
Dab tsi yog qhov sib txawv tseem ceeb ntawm teeb meem tsom mus rau kev daws teeb meem thiab kev xav tsom mus rau kev daws?
Thaum kev ntxhov siab pom tau tias yog tswj tau, teeb meem tsom mus rau cov tswv yim daws teeb meem cuam tshuam nrog cov tsos mob ntawm kev puas siab puas ntsws, thaum nyob hauv qhov xwm txheej tsis txaus ntseeg, kev xav-tsom mus rau kev daws teeb meem cuam tshuam nrog cov tsos mob tsawg dua
Lub ntsiab lus ntawm kev cuam tshuam thiab cuam tshuam yog dab tsi?
Feem ntau, koj yuav xav tau cuam tshuam raws li cov lus qhia lub ntsiab lus cuam tshuam rau qee yam thiab cuam tshuam rau qee yam uas tau cuam tshuam. Qhov sib txawv ntawm kev cuam tshuam thiab cuam tshuam yog li ntawd cov neeg tau pib siv 'cuam tshuam' raws li cov lus piav qhia
Dab tsi yog qhov sib txawv ntawm cov teeb meem cuam tshuam thiab txwv?
Thaum ob hom tuaj yeem ua rau ua pa luv, cov kab mob hauv lub ntsws (xws li mob hawb pob thiab mob ntsws tsis zoo) ua rau muaj teeb meem nyuaj nrog nqus pa, thaum txwv tsis pub muaj kab mob ntsws (xws li ntsws ntsws) tuaj yeem ua teeb meem los ntawm kev txwv tus neeg lub peev xwm nqus pa
Dab tsi yog qhov txawv ntawm grey teeb meem thiab cov teeb meem dawb?
CNS muaj ob hom ntaub so ntswg: grey teeb meem thiab dawb teeb meem, Grey teeb meem, uas muaj ib tug pinkish-grey xim nyob rau hauv lub hlwb nyob, muaj cov cell lub cev, dendrites thiab axon terminals ntawm neurons, yog li nws yog qhov twg tag nrho cov synapses. Qhov teeb meem dawb yog ua los ntawm axons txuas sib txawv ntawm qhov teeb meem grey rau ib leeg
Dab tsi yog qhov teeb meem ntawm kev cuam tshuam thiab kev nyob?
Hauv cov teeb meem refractive, lub teeb rays nkag mus rau hauv lub qhov muag tsis yog tsom rau ntawm retina, ua rau pom qhov muag tsis pom. Cov duab ntawm lub qhov muag lossis lub ntsej muag lossis lub hnub nyoog ntsig txog kev nruj ntawm lub lens tuaj yeem txo qis lub zog ntawm lub qhov muag