Pachymetry ndi yesero losavuta, lopweteka lomwe limachepetsa msinkhu wa cornea.
N'chifukwa Chiyani Kuyeza Kufooka kwa Korneal?
Kulemera kwa Korneal monga momwe imayezedwera ndi pachymetry ndi kofunikira m'munda wa chisamaliro cha maso pa zifukwa zingapo.
Pachymetry ingauze madokotala ngati cornea ili kutupa. Matenda monga Fuch's Dystrophy akhoza kuwonjezera madzi mu cornea ndipo amachititsa kuwonjezeka kwa makulidwe onse.
Ngakhale kuvala malisitomala amatha kugwiritsidwa ntchito nthawi zina kumapangitsa kuti thupi likhale lopweteka kwambiri. Izi zingakhale zovuta kuziwona pansi pa microscope. Komabe, pachymetry idzasonyeza kuwonjezeka kwakukulu kwa makulidwe.
Kulemera kwa Korneal ndi kofunika kwambiri pakuchita opaleshoni yochotsa opaleshoni monga LASIK . Kudziwa za kulemera kwamakono n'kofunika kudziwa ngati munthu ali woyenera kukonzekera masomphenya. Chifukwa chakuti mbali imodzi ya ndondomekoyi ikuphatikizapo kuchotsa minofu yomwe imachoka m'mimba, ndikofunika kudziŵa momwe zingakhalire. Anthu ena akhoza kukhala ndi cornea yomwe ndi yoonda kwambiri kuposa yachibadwa. Sizimayambitsa mavuto kapena matenda, koma zimatha kuwonetsa masoka owonetsetsa ngati njira yowatsatila imachitika kwa munthu amene khungu lake ndi lochepa kwambiri.
Pachymetry yakhala yofunika kwambiri mu chisamaliro cha glaucoma . Glaucoma ndi matenda omwe kuthamanga kwa diso (kuthamanga kwa m'mimba) kungakwezeke.
Kuthamanga kwa maso kumaso kungachititse mitsempha ya mitsempha yotayika mu retina yomwe ikhoza kuchititsa khungu kapena kuchepa kwa masomphenya. Njira zambiri zimaphatikizapo njira yothetsera kuyang'ana kwa diso pamene chidacho chimakhudza cornea. Ochita kafukufuku anapeza kuti makulidwe amtunduwu amasiyana pang'ono. Kulemera kwa Korneal kungakhudze kuwerenga kwenikweni kwa kuchuluka kwa kupanikizika m'maso.
Kuonjezera apo, kudziwika kwa chigawo chachikulu chokhala ndi vuto la glaucoma chifukwa cha Ocular Hypertensive Treatment Study (OHTS) kwachititsa kuti pulojekitiyi ikhale yofunikira kwambiri poyezetsa glaucoma.
Kodi pachymetry imachitidwa bwanji?
Pachymetry ikhoza kuchitidwa ndi njira ziwiri, ndi njira zamagetsi kapena njira zamagetsi.
Ultrasound Pachymetry: Ultrasound pachymetry monga dzina limatanthawuzira, amagwiritsa ntchito njira za ultrasound kuti ayese makulidwe a cornea. Njira imeneyi imagwiritsa ntchito zipangizo zomwe zimagwira ntchito komanso zowonongeka. Chombo chachikulu kwambiri choyesa kuyeza kwa ultrasound ndichoti kafukufuku yemwe amagwiritsidwa ntchito kukhudza cornea ayenera kukhala bwino. Kusamuka kwina kulikonse ndipo kuwerenga sikungakhale kolondola. Ma ultrasound pa mapymeters amapangidwa kwambiri kuti ayesedwe ku glaucoma ndipo amaphatikizidwapo podzipangira chiwopsezo chowopsa.
Pachymetry yogwira: Zojambula pamagetsi zimasiyana. Makina ena opangika opangidwa ndi opopi amapangidwa kuti apangidwe ku biomicroscope imene madokotala am'manja amagwiritsa ntchito kuti amatchedwa nyali yopanga. Zida zina zimatha kupima pamymetry pogwiritsa ntchito microscopy yosawerengeka. Chida ichi sichikugwirizana ndi cornea. Mtundu umodzi wa opymetry opangidwa ndi wotchuka wotchuka ndi OCT kapena optical coherence tomography pachymetry.
OCT pachymetry sichimakhudzanso ndi cornea kukwaniritsa miyeso. OCT amagwiritsa ntchito mfundo yotchedwa optical interferometry. Njira ina yomwe imagwiritsidwa ntchito pogwiritsa ntchito chithunzi chotchedwa Scheimpglug imagwiritsidwa ntchito kwambiri popeza miyeso yambiri yamakono yowonjezereka kuphatikizapo pakatikatikatikati mwake ndikupeza miyesoyi mofulumira kwambiri. Chimodzimodzinso cha makina a inshuwalry ndi chakuti makampani a inshuwalansi amatha kulipira ultrasound pachymetry osati nthawi zonse kuti apangire opymetry kotero n'zotheka kuti dokotala akhoze kukufunsani kuti mulipire.