![Koj puas tuaj yeem pom optic chiasm nrog lub ophthalmoscope? Koj puas tuaj yeem pom optic chiasm nrog lub ophthalmoscope?](https://i.answers-medical.com/preview/medical-health/14143143-can-you-see-the-optic-chiasm-with-an-ophthalmoscope-j.webp)
Video: Koj puas tuaj yeem pom optic chiasm nrog lub ophthalmoscope?
![Video: Koj puas tuaj yeem pom optic chiasm nrog lub ophthalmoscope? Video: Koj puas tuaj yeem pom optic chiasm nrog lub ophthalmoscope?](https://i.ytimg.com/vi/kfTJ_E2SOSg/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Lub point ntawm kev tawm mus rau lub qhov muag paj hlwb hu ua qhov muag disk, qho pom tau ntawm ib ophthalmoscope . Raws li daim duab 5-8 qhia, ntawm lub optic chiasm lub qhov ntswg fibers los ntawm txhua qhov muag decussate thaum lub cev nqaij daim tawv txuas ntxiv ipsilaterally. Qhov kev hloov no ua rau stereoscopic peb-dimensional pom tau.
Ntawm no, koj yuav nrhiav tau qhov optic disc nrog lub ophthalmoscope li cas?
Tuav lub ophthalmoscope txog 6 nti ntawm qhov qhov muag thiab 15 degrees rau sab xis ntawm tus neeg mob. Nrhiav liab reflex Txav mus los ze zog, nyob nasally kom txog thaum koj saib cov optic paj hlwb . Tig lub diopter lens kom txog rau thaum optic paj hlwb los rau hauv tsom.
Ib yam li ntawd, qhov optic chiasm pab txhawb rau tib neeg lub zeem muag li cas? Ib nrab hla ntawm qhov muag paj hlwb ntawm lub optic chiasm tso cai rau pom kev cortex tau txais tib lub hemispheric pom kev teb los ntawm ob lub qhov muag. Superimposing thiab ua cov monocular no pom kev cov cim tso cai rau pom kev cortex los tsim binocular thiab stereoscopic pom kev.
Ib tug kuj yuav nug, dab tsi tshwm sim ntawm optic chiasm?
Cov optic chiasm yog tus qauv X-shaped tsim los ntawm kev hla ntawm lub qhov muag paj hlwb hauv hlwb. 1? Nws xav tias kev hla thiab tsis hla qhov muag paj hlwb uas taug kev los ntawm optic chiasm tsim nyob rau hauv xws li ib txoj kev pab nyob rau hauv binocular tsis pom kev thiab qhov muag-tes kev sib koom tes.
Qhov twg optic paj fibers mus tom qab lawv diverge ntawm optic chiasm?
Posterior rau lub optic chiasm , cov paj hlwb taug kev hauv qhov muag tracts mus rau ntau qhov chaw ntawm lub hlwb-feem ntau yog lub lateral geniculate nuclei. Fibers los ntawm qhov nruab nrab geniculate nuclei tsim rau qhov muag radiations uas kawm mus rau lub pom kev cortex nyob rau hauv lub occipital lobes nyob rau hauv lub rov qab ntawm lub hlwb.
Pom zoo:
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Yog hais tias lub paj hlwb puas lawm, ces qhov ntawd ua rau lub qhov muag tsis pom kev vim tsis muaj cov ntaub ntawv los ntawm lub qhov muag mus txog qhov optic chiasm. Yog tias qhov muag pom kev puas tsuaj, uas ua rau muaj kev tsis sib xws hemianopsia - tag nrho ib nrab ntawm qhov pom qhov muag ploj ntawm ob lub qhov muag