![Snellen qhov muag daim duab ntsuas rau dab tsi? Snellen qhov muag daim duab ntsuas rau dab tsi?](https://i.answers-medical.com/preview/medical-health/13880437-what-does-the-snellen-eye-chart-test-for-j.webp)
Video: Snellen qhov muag daim duab ntsuas rau dab tsi?
![Video: Snellen qhov muag daim duab ntsuas rau dab tsi? Video: Snellen qhov muag daim duab ntsuas rau dab tsi?](https://i.ytimg.com/vi/rRnu9fMTMW4/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
pom kev
Tib neeg tseem nug, koj txhais li cas daim duab Snellen?
Rau txhais koj nyeem ntawv , xav txog tus lej hauv ko taw. Piv txwv li, ib tus neeg nrog 20/60 pom kev tau nyeem ntawm 20 ko taw deb li cas tus neeg nrog ib txwm muaj pom kev yuav nyeem ntawm 60 feet deb. Cov chav kuaj kab mob optometric niaj hnub no tau nruab nrog hluav taws xob qhov muag nyeem kab kos , ua kom yooj yim los tsim qhov nyeem tau raug.
Ib yam nkaus, puas yog tag nrho Snellen qhov muag kab kos tib yam? Qee qhov xwm txheej Snellen qhov muag daim ntawv siv tsis tau. Tumbling E. daim duab muaj lub tib yam nplai raws li tus qauv Snellen qhov muag daim ntawv , tab sis tag nrho cim rau ntawm daim duab yog cov ntawv loj "E," hauv qhov sib txawv ntawm qhov sib txawv (tig hauv qhov nce ntawm 90 degrees).
Kuj paub, koj yuav sim ntsuas qhov pom kev li cas?
Saib ntawm 14 txog 20 feet deb, daim duab no pab txiav txim siab seb koj tuaj yeem pom cov tsiaj ntawv thiab duab zoo li cas. Thaum lub sij hawm xeem , koj yuav zaum lossis sawv ntsug tshwj xeeb nyob deb ntawm daim duab thiab npog ib lub qhov muag. Koj yuav nyeem nrov nrov cov tsiaj ntawv uas koj pom nrog koj lub qhov muag tsis pom. Koj yuav rov ua cov txheej txheem no nrog koj lwm lub qhov muag.
20/20 lub zeem muag ntawm daim duab qhov muag yog dab tsi?
Kev pom qhov muag feem ntau ntsuas nrog Snellen daim duab . Snellen kab kos tso cov tsiaj ntawv ntawm zuj zus me me. "Li qub" pom kev yog 20/20 . Qhov no txhais tau tias cov ntawv xeem pom tib kab ntawv ntawm 20 ko taw tus neeg ntawd li qub pom kev pom ntawm 20 ko taw.
Pom zoo:
Koj hu dab tsi daim duab zais hauv daim duab?
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Stereograms yog cov duab 3D zais hauv lwm daim duab. Txhawm rau saib cov duab 3D, tsuas yog saib ntawm daim duab kom txog thaum cov duab pib hloov pauv. Nrhiav tus Pin no thiab ntau ntxiv ntawm Kev Paub Txog & Qhov Tsis Txaus Ntseeg Quizzes los ntawm Playbuzz. 3d Thaum Duab. Thaum 3d dluab
Tus pas ntsuas ntsuas ntsuas ntsuas ntsuas ntsuas yog dab tsi?
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Qhov kev ntsuas no siv cov khoom paub ntawm lub ntiajteb txawj nqus los txiav txim siab tias tus neeg yuav siv sijhawm ntev npaum li cas los teb rau qhov poob ntawm ib yam khoom los ntawm kev ntsuas deb npaum li cas cov khoom tuaj yeem ntog ua ntej raug ntes
Dab tsi yog qhov ntsuas qhov ntsuas qhov ntsuas?
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Kev ntsuas qhov ncauj hais lus yog cov cuab yeej muaj zog siv los ntsuas qhov kev paub mob. Kev ntsuas qhov ntsuas qhov hais lus, tseem hu ua cov qhab nia ntawm qhov mob thiab cov lus piav qhia qhov ntsuas, yog cov ntawv qhia tus kheej uas muaj ntau cov lus uas tsim los piav txog qhov mob hnyav thiab lub sijhawm (Karcioglu li al., 2018)
Qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas kub npaum li cas?
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Cov qhab nias thiab txhais lus CAS muaj 21 yam khoom nrog 4 qhov kev xaiv txhua tus (uas tau qhab nia 0,1,2,3). CAS tus qhab nia tsuas yog qhov sib npaug ntawm cov qhab nia khoom. Yog li, cov qhab nia ntawm CAS tuaj yeem nyob ntawm 0 txog 63. Qhov qhab nia siab dua txhais tau tias tus neeg koom nrog muaj cov tsos mob npau taws ntau dua
2040 lub zeem muag ntawm daim duab qhov muag yog dab tsi?
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Yog tias koj muaj 20/40 lub zeem muag, nws txhais tau tias koj yuav tsum nyob ze li 20 ko taw kom pom tus neeg uas pom kev zoo ib yam tuaj yeem pom ntawm 40 ko taw. Tsab ntawv loj tshaj plaws ntawm daim ntawv qhia qhov muag feem ntau sawv cev rau qhov acuity ntawm 20/200 uas yog txuam nrog lub sij hawm 'lawv dig muag.' Koj yuav raug hais kom nyeem cov ntawv ib lub qhov muag ib zaug