Lub retina, nws anatomical thiab haumxeeb nta.

Lub retina los yog lub retina (retina), nruab nrab yog cov puab dag tom qab lub choroid ntawm lub qhov muag. Nws huab uniqueness lies nyob rau hauv lub fact tias muaj peb peripheral neuron, los ntawm uas tag nrho cov nrig txog kev pom cov lus qhia ntaus nqi los ntawm lub qhov muag mus rau lub paj hlwb, uas tau txais ib tug zaum kawg kev kho mob thiab transformation mus rau hauv ib tug nco nrig txog kev pom cov dluab. Vim lub retina ntawm tag nrho hloov khoom nruab nrog ntawm lub xub ntiag yuav tsum equated mus rau ib tug complex thiab mas differentiated intracerebral lug.

Lub retina yog ib tug heev thiab txawv txawv qauv. Nws muaj ib tug ultra-thin qauv, tab sis histologically nws tseem paub qhov txawv kaum sib txawv khaubncaws sab nraud povtseg nyob rau hauv lawv cov qauv. Cov Thawj zaug ntawm lawv, uas yog bordered nrog ib tug nruab nrab plhaub ob lub qhov muag hais xim epithelium. Nws muaj ib tug loj tus naj npawb ntawm melanocytes uas tsim melanin. Tom qab cov xim txheej yog svetovosprinimayuschaya ib feem ntawm lub ceev ceev. Qhov no yog thawj neuron. Nws yog sawv cev los ntawm kev photoreceptors. Txhua yam ntawm lawv muaj ib txog kev ua. Yog li, lub sticks yog lub luag hauj lwm rau hauv lub tsim ntawm twilight, thiab lub tsev ntawm qhov lub khob hliav qab - rau xim xaav thiab clarity. Tias lawv tshwm sim txhua txhua ob lub teeb cov tshuaj tiv thaiv. Qhov thib ob thiab thib peb khaubncaws sab nraud povtseg ntawm neurons teem nyob rau hauv bipolar thiab ganglion hlwb, ntsig txog. Los ntawm cov anatomical nta ntawm retinal week yuav tsum tau muab sau tseg rau hauv lub projection ntawm nws optic paj thiab macula. Nyob rau hauv lub cheeb tsam ntawm lub optic paj disc yog lub thiaj li hu ua "dig muag nqaij ntawd". Nws yog kiag li indeferentno mus rau lub teeb stimulation, raws li muaj yog tsis muaj photoreceptor hlwb. Ib tug heev ntshiab daim duab ntawm tus tib neeg qhov muag muab lub hauv paus fossa (macular cheeb tsam), nyob rau hauv uas cov kev ceev ntawm cones cia li rolls tshaj. Macula anatomists hu ua "lub qhov", vim hais tias nyob rau hauv no qhov chaw otsutsvuyut plaub khaubncaws sab nraud povtseg ntawm cov retina.

Lub retina nyob rau hauv ib txwm, noj qab nyob zoo qhov muag yuav tsum haum snugly mus rau lwm choroid, nws outermost txheej, xa mus rau raws li ib tug glassy phaj los yog Bruch lub membrane. Nyob rau hauv tus neeg mob qhov twg mob no yog ua txhaum, lub qhov muag ua ntej los yog tom qab ntawd, tog twg los nthawv los yog nyob rau hauv tus ntawm tej yam sab nraud thiab sab hauv yam, nws yuav tshwm sim abruption. Qhov no yog lub feem ntau txaus ntshai lub xeev ntawm thaum muaj xwm ceev thiab cov kev hloov ntawm lub zeem muag, uas muaj peev xwm mus tas li tsis pub ib tug neeg ntawm muaj peev xwm pom. Softer, tab sis tsis muaj tsawg txaus ntshai mob yog pom tias yuav tau retinal kua muag nws ob lub qhov muag. Nws tshwm sim nyob rau hauv lub taw tes ntawm loj tshaj thinning. Ib txhia neeg tej zaum yuav tsis pom lub kua muag, vim hais tias lawv yog me me thiab yuav tsum tau nyob deb deb ntawm qhov chaw, uas yog lub luag hauj lwm rau kom meej thiab ntse dluab ntawm cov khoom nyob rau hauv lub retina. Feem ntau cov pob txha lov tshwm sim thaum ib tug neeg mob nyob rau hauv Ophthalmology keeb kwm muaj tej yam degeneration ntawm cov retina. Piv txwv li, nyob rau hauv siab degrees ntawm myopia, los yog raws li nws yog hu ua nyob rau hauv cov neeg, myopia, setchaka neeg mob vim lub loj loj ntawm lub ceev ceev yog xav ncav us txog, yuav nkig thiab heev nyias. Nyob rau hauv xws li ib tug disturbed ntshav mov rau lub retina, thiab kev noj haus. Yog li ntawd, tej cawv los ntawm sab nraum (tshuab mus rau lub taub hau, ntev li ib ce muaj zog, uas tsub kom lub siab, tam tuav) yuav ua tau kom ruptures thiab tej zaum detachment ntawm lub retina. Kev kho mob yuav tsum tau nqa tawm sai li sai tau, raws li muaj ib lub caij nyoog los lub functionality ntawm lub retina. Nyob rau hauv cov ntaub ntawv ntawm detachment neeg mob yuav tsum tau pw so thiab tranquility. Ib tug me me detachment ntawm tshiab yuav nws tus kheej mus rau lawv thawj qhov chaw. Nyob rau hauv tus neeg mob uas tsis muaj kev cia siab rau nws tus kheej-kho, kev phais kho mob yuav tsum tau - sealing scleral los yog vitreous phais. Lub retina, nyob rau hauv uas ib tug so tau tshwm sim muaj peev xwm rov qab laser coagulation kis feem.