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Video: Dab tsi yog fovea thiab koj pom dab tsi nyob ntawd?
![Video: Dab tsi yog fovea thiab koj pom dab tsi nyob ntawd? Video: Dab tsi yog fovea thiab koj pom dab tsi nyob ntawd?](https://i.ytimg.com/vi/gHZE_AWnyGc/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Fovea : Hauv qhov muag, ib lub qhov me me nyob hauv macula ntawm retina uas muab qhov pom tseeb tshaj plaws ntawm txhua tus. Tsuas yog nyob rau hauv fovea ua yog cov khaubncaws sab nraud povtseg ntawm retina kis ib sab rau cia lub teeb poob ncaj qha rau lub khob hliav qab, cov cell uas muab cov duab zoo tshaj plaws. Kuj tseem hu ua central fovea ua los yog fovea ua centralis.
Yog li ntawd, fovea muaj dab tsi?
Hauv nruab nrab ntawm macula yog fovea ua centralis. Cov macula muaj feem ntau cones thiab ob peb rods, thiab fovea ua centralis muaj tsuas yog cones thiab tsis muaj pas nrig. Nyob rau hauv qhov muag kab mob hu ua hnub nyoog hais txog macular degeneration, los yog AMD, lub cones yog puas los ntawm kev sib sau ntawm cov khoom lom ntawm qhov muag metabolism hu ua drusin.
Tsis tas li ntawd, qhov txawv ntawm fovea thiab qhov muag tsis pom kev yog dab tsi? Qhov muag tsis pom qhov muag :-Lub ntsiab lus uas lub retina thiab cov hlab ntsha kho qhov muag sib ntsib ib leeg yog tsis muaj cov hlwb. Lub ntsiab lus no yog lub npe hu ua qhov muag tsis pom kev . fovea ua :-Yob chaw yog ib qho kev nyuaj siab me me ua ib lub qhov dej ntiav hauv retina nyob tom qab ntawm txhua lub qhov muag hauv tib neeg lub cev.
Xav txog qhov no, koj tuaj yeem nrhiav Fovea Centralis?
Structure thiab Function The fovea centralis cov yog nyob nyob rau hauv qhov chaw ntawm macula lus , qhov me me, tiaj tus nyob raws nraim hauv nruab nrab ntawm qhov tom qab ntawm retina. Raws li cov fovea ua yog lub luag haujlwm rau lub zeem muag pom tseeb nws yog qhov ntom ntom ntom ntom ntom ntom ntom ntom nrog lub khob hliav qab.
Qhov sib txawv ntawm macula thiab fovea yog dab tsi?
Cov fovea ua yog lub qhov me me hauv retina ua ke nrog lub hauv paus nruab nrab ntawm lub lens, qhov twg macula yog ib cheeb tsam loj nrog rau thiab nyob ib puag ncig fovea ua . Cov fovea ua muaj kwv yees li ntawm 4, 000 qhov me me, nyob sib ze sib thooj (tsis muaj pas nrig) thiab ua kom pom qhov siab tshaj plaws nyob txhua qhov chaw ntawm lub qhov muag.
Pom zoo:
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Qhov muag tsis pom, lossis ob-qhov muag tsis pom, yog thaum tus neeg mob tsis paub tias lawv tau txais kev kho mob li cas. Lawv tuaj yeem tau txais cov placebo lossis cov tshuaj tiag. Qhov muag tsis pom kuj tseem hais txog kev coj ua ntawm kev khaws lub npe ntawm kev kho mob. Placebos tuaj yeem siv rau qhov muag tsis pom hauv kev txheeb cais
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Xya lub hlwb, sawv cev rau txhua hom, tau koom ua ke los ua ommatidia
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Cov cim 3 mob ntshav qab zib loj yog: Polyuria - xav tau kom tso zis ntau, tshwj xeeb yog thaum tsaus ntuj. Polydipsia - nqhis dej ntau ntxiv & xav tau kua. Polyphagia - nce qab los noj mov
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Pom cov khoom lossis cov qauv uas pom tau zoo hauv lwm yam khoom siv tsis sib xws lossis tsis cuam tshuam lossis hu ua pareidolia. Lub peev xwm los ua paeidolia tau tsim ntau dua hauv qee tus neeg thiab tsawg dua rau lwm tus. Saib cov duab hauv qab no kom paub ntau ntxiv thiab sim koj tus kheej lub peev xwm los saib tej yam uas tsis nyob ntawd
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Lub tapetum lucidum, uas tsis pom nyob rau hauv tib neeg lub qhov muag, ua haujlwm kom pom lub teeb mus rau retina