Mubvunzo: Chii chinonzi GDx?
Chiremba wangu akaraira GDx muedzo kwandiri. Zvinorevei izvo? Zvakakosha here?
Mhinduro:
Chiremba wako akaraira muedzo unonzi "GDxTM Nerve Fiber Analyzer" (GDx). Chiyero cheGDx chiyeuchidzo chitsva chakaratidza kuti chakakosha pakuongorora uye kutungamirirwa kwe glaucoma . IGDx isiri iyo inoshandisa laser kuti ione kubwinya kwehutano fiber.
Vakuru vekare vema glaucoma vanga vakakomberedza kuenzanisa kushungurudzwa kwameso kana kuenzanisa kuti glaucoma inowanikwa sei munharaunda yako yose yekuona. Kunyange zvazvo miedzo iyi inokosha zvikuru mukurapa uye kutungamirirwa kwe glaucoma, zvingava zvinobatsira kuyera kana kuedza kutanga izvo zvinokanganisa glaucoma zvinogona kukonzera mutsara fiber pakatarisana neziso.
Iyo mutsara fiber yakavhara inosvika mamiriyoni ehupi hupi hunoti "axons" inopoteredza nerve ye optic uye inopararira pane retina yako. Mune varwere vakawanda vane glaucoma, yakawanda nerve fiber layer kuparadzwa ingadaro yakatoitika nenguva iyo kurasikirwa kwekuona kunoonekwa. Glaucoma inosangana neboka rezvirwere zvinokonzera kukuvadza kweropa re optic. Iko tsvina inofanirwa kutakura matanho kuuropi. Glaucoma inozivikanwa se "sneak mbavha yekuona," nokuti vanhu vazhinji havazivi kuti vane dambudziko kusvikira chiratidzo chikuru chakarasika.
GDx inoshandisa rudzi rwekutsvaga laser polarimeter kuti uone kubwinya kwehutano fiber. Nzira yacho haina njodzi uye inowanzoitwa kune mwana asina kudzidza. Uhu hwehutachiona hwehutano hwakakonzerwa hunobva hwafananidzwa nehutachiona hwehutano hwemazuva ose. GDx inotarisa nerve fibers uye inofananidzwa nayo kune database yehutano, varuchiucoma vasingabhadhari.
Kuonda kwehutanda kunoratidza glaucoma. Idzi ruzivo runobva rwakawanika kune chiremba wako nenzira yemifananidzo, mairafu uye nhamba deta dzinoratidza mikana ye glaucoma.
Chiyero cheGDx chinonyanya kusimba pakuonekwa kwokutanga sezvo zvidzidzo zvinoratidza kuti vanopfuura 50% yevanhu vane glaucoma havazivi kuti vane. Iyo inobatsira zvikuru pakugadzirisa glaucoma pamusoro pemakore, nokuti inoona kuchinja kuduku zvikuru kana ichienzaniswa neDDx yapfuura. Iyi ruzivo inobatsira chiremba wako kuitira kuti iye asarudze kana iwe une glaucoma kana kuti unofanirwa kuonekwa se "glaucoma suspect." Nepo nhaurwa fiber kuongorora semuenzaniso wekuedza hazviiti kuti uwane hutano hwekujekesa kwechirucoma, inopa chiremba wako nedheta iyo ichawedzera pane yako yose kuitira kuti zvisarudzo zviri nani zvigone kuitwa maererano nekurapa kwako.
Kunyange zvazvo GDx ichiri chiitiko chakanaka, inokurumidza kuva chigadzirwa chisina kumboitika. Kubudirira kweGDx nezvimwe zvinotungamirira zvinotungamirira mukugadzirwa kweOCT: Optical Coherence Tomography .
OCT chii?
Optical coherence tomography (OCT) inofanirwa nekodhiyo yekuongorora imaging inoshandiswa kugadziriswa nekugadziriswa kwemufananidzo wezvinyorwa zve retina .
OCT yakafanana nekuedzwa kwe ultrasound, kunze kwekuti kufungidzira kunoitwa nekuyera chiedza pane kurira. OCT inotarisa retinal nerve fiber kuve yakasimba mu glaucoma uye nezvimwe zvirwere zveptic nerve.
Kudzidza zvakawanda pamusoro peOCT
Optical Coherence Tomography, iyo inonziwo OCT, ndiyo nzira yevanhu vanoongorora maitiro uye ophthalmologists kuti vafananidze shure kweziso rinosanganisira macula, optic nerve, retina uye choroid.
Munguva yekuongorora kweziso, optometrists uye ophthalmologist vanogona kutarisa kumashure kweziso uye maitiro ayo. Zvisinei, dzimwe nguva vanachiremba vanoda mamwe tsanangudzo kana kuti vanoda kuongorora tsanangudzo pasi pedenga iyo yakaoma kutarisa nehutano hwakanaka.
Mune dzimwe nzira, inogona kuenzaniswa nekuita "MRI ye retina." Vamwe vanorondedzera iyo se optical ultrasound nokuti mifananidzo inofungidzira pakati pemasukisi kuti ipe vanachiremba zvidhori zvakasiyana-siyana. Tsanangudzo inogona kuonekwa neOCT iri pakusarudzwa kwakadaro kuti vanachiremba vari kuona zvinhu zvisati zvamboonekwa mumaziso evanhu .
Kunobva:
Devine, Norma. Glaucoma Service Foundation kuchengetedza bofu, 23 Aug 2000.