Umbuzo: Kuyini i-GDx?
Udokotela wami ucele ukuhlolwa kwe-GDx kimi. Kusho ukuthini lokho? Ingabe kuyadingeka?
Impendulo:
Udokotela wakho ucele ukuhlolwa okuthiwa "i-GDxTM Nerve Fiber Analyzer" (GDx). Isivivinyo se-GDx sivivinywa esisha kakhulu esiye safakazela ukuthi siyasiza ekuxilongweni nasekulawuleni i-glaucoma . I-GDx iyithuluzi elisebenzisa i-laser ukucacisa ubukhulu bezingqimba ze-nerve fiber.
Izivivinyo ze-glaucoma ezindala ziye zagxila ngokulinganisa ukucindezeleka kweso noma zilinganisa umphumela wokuthi i-glaucoma inomkhakha wakho wokubuka wonke. Nakuba lezi zivivinyo zibaluleke kakhulu ekwelapheni nasekulawuleni i-glaucoma, kungaba usizo ukukala noma ukuhlola kusheshe ukuthi imonakalo ye-glaucoma ingabangela ukubheka kwe-fibre nerve ngemuva kweso.
I-fibre ye-fibre yezinzwa iqukethe izigidi zezintambo ezibizwa ngokuthi "i-axons" ezungeze isisindo somzimba futhi zisakaze phezu kwe- retina yakho. Ezigulini eziningi ezine-glaucoma, umonakalo omkhulu wezingqimba ze-nerve fiber kungenzeka ukuthi usuvele kwenzeka ngesikhathi sokulahlekelwa kombono kuqaphela. I-glaucoma ifinyelela eqenjini lezifo ezidala umonakalo kumgogodla we-optic. I-nertic optic ibhekene nokuphatha izithombe ebuchosheni. I-glaucoma iyaziwa ngokuthi "isela lokuzibonela lokubona," ngoba abantu abaningi abazi ukuthi banenkinga kuze kube yilapho umbono obalulekile ulahlekile.
I-GDx isebenzisa uhlobo lwe-polarimeter laser lokuskena ukukala ubukhulu be-fibre nerve layer. Inqubo ayibuhlungu futhi ivame ukuqhutshwa kumfundi ongafundile. Ubuningi be-fibre ne-fibre layer bube buqhathaniswa nobunqunu bomzimba we-fibre nerve. I-GDx ibalaza izintambo zezinzwa futhi iwuqhathanisa nesitatimende semiguli enempilo, e-glaucoma.
Ukunciphisa amafibisi kubonisa i-glaucoma. Lolu lwazi lunikezwa udokotela wakho ngesimo sezithombe, amagrafu kanye nedatha yemininingwane ebonisa ukuthi kungenzeka ukuthi i-glaucoma.
Ukuhlolwa kwe-GDx kunamandla kakhulu ekutholeni kokuqala njengoba izifundo zibonisa ukuthi abantu abangaphezu kuka-50% abanama-glaucoma abazi ukuthi banakho. Kuyasiza kakhulu ekulawuleni i-glaucoma eminyakeni, ngoba ithola izinguquko ezincane uma kuqhathaniswa nedatha ye-GDx yangaphambilini. Lolu lwazi lusiza udokotela wakho ukuze akwazi ukunquma ukuthi unayo i-glaucoma noma kufanele nje kubhekwe "umsolwa we-glaucoma." Nakuba ukuhlaziywa kwe-nerve fibre njengendlela yokuhlolwa okungafaniyo akukwenzi ukuxilongwa ngokucacile kwe-glaucoma, inikeza udokotela wakho idatha ezokwengeza kweso lakho lonke ukuze izinqumo ezingcono zenziwe mayelana nokwelashwa kwakho.
Nakuba i-GDx isengumvivinyo omuhle, iyashesha ukuba yisixhobo esiphelelwe yisikhathi. Ukuthuthukiswa kwe-GDx nezinye izinto eziholela ekukhiqizweni kwe- OCT: Tomtical Coherence Tomography .
Iyini i-OCT?
I-Optical coherence tomography (OCT) ubuchwepheshe bokucabanga bokungabonakali obusetshenziselwa ukuthola isinqumo esiphezulu sezithombe ze- retina .
I-OCT ifana nokuhlolwa kwe-ultrasound, ngaphandle kokuthi ukucabangela kwenziwa ngokulinganisa ukukhanya kunokuba umsindo. I-OCT inquma ububanzi bokungqimba kwe-fibre nerve fibre ku- glaucoma nezinye izifo zensimbi ye-optic.
Ukufunda kabanzi mayelana ne-OCT
I-Optical Coherence Tomography, ebizwa nangokuthi i-OCT, iyindlela yokwenza i-optometrists kanye ne-ophthalmologists ukufanekisela ngemuva kweso kuhlanganise i-macula, i-optic nererve, i-retina ne-choroid.
Phakathi nokuhlolwa kwamehlo, ama-optometrists kanye ne-ophthalmologist bangabuka emuva kwehlo nesimo sawo semvelo. Kodwa-ke, ngezinye izikhathi odokotela badinga imininingwane eminingi noma badinga ukuhlola imininingwane ngezansi kwendawo okulukhuni ukuyibuka ngamasu ajwayelekile.
Ngandlela-thile, ingafaniswa nokwenza i- "MRI ye-retina." Abanye bayichaza ngokuthi i-ultrasound ye-optical ngoba imifanekiso ibonakala phakathi kwezicubu ukuhlinzeka odokotela ngezithombe ezihamba phambili.Imininingwane engabonwa nge-OCT isinqumo esiphezulu kangangokuthi odokotela babona izinto ezingakaze zibonwe ngaphambili esweni lomuntu ophilayo .
Umthombo:
Devine, Norma. I-Glaucoma Service Foundation Yokuvimbela Ukuphulukisa, 23 Aug 2000.