Umbuzo: Yintoni i-GDx?
Ugqirha wam ucele uvavanyo lweGDx kum. Ithetha ntoni le nto? Ngaba kuyimfuneko?
Impendulo:
Ugqirha wakho ucele uvavanyo olubizwa ngokuba ngu "GDxTM Nerve Fiber Analyzer" (GDx). Uvavanyo lwe-GDx luvavanyo olutsha olwenziwe luncedo ekuxilongweni nasekulawuleni i- glaucoma . I-GDx isixhobo esisebenzisa i-laser ukucacisa ubungakanani bombhobho wefiber nerve.
Iimvavanyo ze-glaucoma ezindala zijolise kumlinganiselo wokulinganisa kwamehlo okanye ukulinganisa i-glaucoma inomxholo wakho jikelele. Nangona le mvavanyo ibaluleke kakhulu kunyango kunye nokulawulwa kwe-glaucoma, kuya kuba luncedo ukulinganisa okanye ukuvavanya kwangaphambili ukuba yintoni umonakalo we-glaucoma onokubangela ukuba ungqongqo lwe-fibre nerve ngemuva kweso.
Uluhlu lwefayibha lombhobho luqukethe izigidi zeempawu ezibizwa ngokuba yi "axons" ezijikeleze i-nertic optic kwaye zanda phezu kwe- retina yakho. Kwizigulane ezininzi ezinegraucoma, umonakalo omkhulu wongqimba lwe-nervous uvele wenziwa ngelixesha nawuphi na ukulahleka kombono kuphawulwe. I-glaucoma ihambela kwiqela lezifo ezibangele umonakalo kwiimbono ze-optic. I-nertic optic inomthwalo wokuthwala imifanekiso kwingqondo. I-Glaucoma iyaziwa ngokuthi "isela lokubona," kuba abantu abaninzi abayazi ukuba banenkinga kwaze kwaba yilapho imbonakalo ebalulekileyo ilahlekile.
I-GDx isebenzisa uhlobo lwe-laser polarimeter ukulinganisa ubukhulu bomgca wefayibha. Inkqubo ayibuhlungu kwaye idlalwa kumfundi ongenamfundi. Ubungakanani bomgca wobunqunu bomnxeba buze bufaniswe nobunqunu bomnyoba wamehlo aqhelekileyo. I-GDx ibalaphuza iimbilini ze-nerve kwaye iyayithelekisa kwi-database yezigulane eziphilileyo, ze-glaucoma.
Ukucocwa kwamafayili kubonisa i-glaucoma. Olu lwazi luya kufumaneka kumgqirha wakho ngendlela yemifanekiso, iigrafu kunye nedatha yeenkcukacha ezibonisa ukuba kungenzeka ukuba i-glaucoma.
Uvavanyo lwe-GDx lunamandla ngakumbi ekufumaneni kwangaphambili njengoko uphando lubonisa ukuba abangaphezu kwama-50% abantu abane glaucoma abazi ukuba banalo. Kwakhona kunceda kakhulu ukulawula i-glaucoma kwiminyaka, kuba ifumanisa utshintsho oluncinane xa kuthelekiswa nedatha yeGDx yangaphambili. Le ngcaciso inceda ugqirha wakho ukuze akwazi ukugqiba ukuba ngaba unayo i-glaucoma okanye kufuneka uqwalaselwe nje "ngumsolwa we-glaucoma." Nangona uhlalutyo lwe-fibre njenge-testal standalone alenzanga ukuxilongwa ngokucacileyo kwe-glaucoma, lunikeza ugqirha yakho idatha eya kudibanisa kwimeko yakho yonke ukuze kwenziwe izigqibo ezingcono malunga nokunyanga kwakho.
Nangona i-GDx isesilingo esihle, iyakwenza ngokukhawuleza isixhobo esiphelelwe yisikhathi. Ukuphuhliswa kwe-GDx kunye nezinye izixhobo ezikhokelela kwimveliso ye- OCT: i-Optical Coherence Tomography .
Yintoni i-OCT?
I-Optical coherence tomography (OCT) iteknoloji yokucinga engabonakaliyo esetyenziselwa ukufumana imifanekiso enqamlezileyo ye- retina .
I-OCT ifana nokuhlolwa kwe-ultrasound, ngaphandle kokuba ukucatshulwa kwenzelwa ukulinganisa ukukhanya kunezandi. I-OCT inomlinganiselo wokulinda kwe-fibre nerve fibre kwi glaucoma kunye nezinye izifo zentsimbi ye-optic.
Ukufunda okungaphezulu malunga ne-OCT
I-Optical Coherence Tomography, ekwabizwa ngokuba yi-OCT, yindlela yokwenza i-optometrists kunye ne-ophthalmologists ukufanekisela umva kweso iso kuquka i-macula, i-nertic optic, i-retina kunye ne-choroid.
Ngexesha lokuhlolwa kwemehlo, i-optometrists kunye ne-ophthalmologist banokubukela emva kweso kunye ne-anatomy yayo. Nangona kunjalo, ngamanye amaxesha oogqirha badinga iinkcukacha ezingaphezulu okanye kufuneka bahlole iinkcukacha ngaphantsi komgangatho onzima ukuwujonga ngeendlela eziqhelekileyo.
Ngandlela-thile, kunokuthelekiswa nokwenza i- "MRI ye-retina." Abanye bawuchaza njengendlela ye-ultrasound ye-optical kuba imifanekiso ibonakalisa phakathi kwezicubu ukubonelela oogqirha ngemifanekiso eyahlukileyo. Iinkcukacha ezingabonakaliswa ne-OCT zisesigqibo esiphezulu sokuba oogqirha babona izinto azizange zibonwe ngaphambili kwiliso eliphilayo lomntu .
Umthombo:
Devine, Norma. I-Glaucoma Service Foundation ukukhusela ukuPhupha, 23 Aug 2000.