![Cov tsos mob ntawm tus retina yog dab tsi? Cov tsos mob ntawm tus retina yog dab tsi?](https://i.answers-medical.com/preview/medical-health/13868905-what-is-the-appearance-of-the-retina-j.webp)
Video: Cov tsos mob ntawm tus retina yog dab tsi?
![Video: Cov tsos mob ntawm tus retina yog dab tsi? Video: Cov tsos mob ntawm tus retina yog dab tsi?](https://i.ytimg.com/vi/B4CLEJOEVvo/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Retina . Daim duab fundus no qhia qhov qub cov tsos ntawm cov retina . Lub voj voog dawb yog cov hlab ntsha uas txuas rau lub qhov muag mus rau lub hlwb. Cov kab nkhaus liab yog cov hlab ntsha uas nkag mus rau hauv lub qhov muag dhau ntawm cov hlab ntsha.
Ua qhov no hauv kev txiav txim siab, qhov retina zoo li cas hauv tib neeg qhov muag?
Cov lub qhov muag yog txheej nyias nyias ntawm cov ntaub so ntswg uas nyob tom qab qhov muag nyob sab hauv. Nws nyob ze ntawm optic paj . Lub hom phiaj ntawm lub qhov muag yog kom tau txais lub teeb uas lub lens tau tsom mus rau, hloov lub teeb mus rau hauv cov teeb liab neural, thiab xa cov cim no rau lub hlwb kom pom kev pom.
Ib yam nkaus, dab tsi ua rau lub retina? Cov lub qhov muag yog ua nce ntawm 200 lab neurons. Cov lub qhov muag muaj photoreceptors uas nqus tau lub teeb thiab tom qab ntawd xa cov cim no los ntawm cov hlab ntsha mus rau lub hlwb. Cov photoreceptors nyob hauv lub qhov muag yog hu ua pas nrig thiab cones. Peb lub qhov muag muaj 120 lab tus pas nrig thiab kwv yees li 1 lab tus lej photoreceptors.
Ua li no, cov xim retina yog xim dab tsi?
Qhov nruab nrab, muaj 7 lab lub cones hauv tib neeg lub qhov muag , 64 feem pua ntawm cov xim liab, 32 feem pua ntsuab, thiab 2 feem pua xiav, nrog rau txhua qhov ua rau lub cheeb tsam sib txawv me ntsis ntawm xim spectrum. Tsawg kawg yog qhov uas cov kws tshawb fawb tau hais rau xyoo.
Qhov tuab tuab li qub yog dab tsi?
Txhais retinal tuab tau siab tshaj plaws ntawm cov qhov txhab sab hauv ob sab ntawm Stratus (277.4 ± 17.2 Μm) thiab Spectralis OCT (344.8 ± 16.5 Μm). Qhov sib txawv nruab nrab ntawm lub qhov muag tuab yog 69.1 Μm hauv kev ntsuas CSF thiab 69.7 Μm ( ntau yam , 61.9–74.1 Μm) hauv lwm yim ETDRS subfields.
Pom zoo:
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