Ukuqhagamshela kwe-Corneal cross (CXL) yonyango kubantu abahluphekayo kwi- cornea ehlala engazinzile kwaye ibuthathaka. I-cornea iqalisa ukunyuka okanye ukuqhubela phambili, kubangela imbonakalo ephazamisayo kunye nephosakeleyo, ngamanye amaxesha inokuchaphazela kakhulu umgangatho wobomi. Ukuqhagamshela i-Corneal crossing is a method used to slow down the progression of corneal changes. Umnqamlezo we-Corneal unxibelelwano usebenzisa ukukhanya kwe-UV ukuqinisa izibophelelo zeekhemikhali ngaphakathi kwe-cornea.
Ngomhla kaFebhuwari 2012, ukuhlanganiswa kwe-corneal crossing isingeniso inkqubo evunyiweyo ye-FDA, kwaye ayiqhelekanga e-US njengokuba kunjalo.
Yintoni eyenza i-cornea engaqinisekanga?
Izimbini ezibini eziqhelekileyo zokungazinzi kwe-corneal zi-cornea ectasia kunye ne-keratoconus. Ziyinto yesibini ebangela ukuba kuqhutywe ukunyanga okutsha, kwaye kunye kunye ne-15% ye-surgeries yokufakelwa kwe-corneal eyenziwa e-United States.
- I-corneal ectasia: I- corneal ectasia yimeko apho i-cornea ilahlekelwa khona amandla okugcina isimo esivamile, esiqhelekileyo, ngokuqhelekileyo kwi-cornea ibe yincinci. I-cornea iba yincinci kangangokuba ukunyamezela kwamehlo kwangaphakathi kunokubangela ukuba i-cornea iphazamiseke okanye ikhuliswe. Ngenxa yokuba i-cornea inomdla omkhulu kummandla wonke welihlo, umbono uphazamiseka kwaye uphazamise kakhulu. Iiglasi zamasiko kunye nama-lens adibaniselwano alisoloko alungisa le mbono ephosakeleyo.
I-corneal ectasia ibangelwa ngokuhlinzwa ngokutsha, njengeLASIK okanye i-radial keratotomy. I-Ectasia ayikho into eqhelekileyo emva kokuhlinzwa okwenziweyo kodwa ingenzeka kubantu abangengabo abagqwesileyo abafanelekileyo kwinkqubo. Abanye abantu banokuba ne-understatic, corryal dystrophy engabonakaliyo, eyayinzima ukuyilinganisela phambi kokuhlinzwa. I-Ectasia inokuthi ivele kwimeko ebizwa ngokuba yi-pellucid encinci ye-degeneration evame ukuxhamla kunye ne-keratoconus.
- I-Keratoconus: I- Keratoconus yintlungu ye-cornea. Kwi-keratoconus, i-cornea ntshontsho kunye neenkunzi eziphuma ngaphandle njengekona, okubangelwa yimbonakalo ephosakeleyo. Njengoko isimo se-cornea sitshintsha, ukujonga kwangaphambili kunye ne- astigmatism kunokuphuhlisa . Ukutshintshwa kwe-keratoconus ngokuqhelekileyo kudla ngokukhawuleza. Nangona i-keratoconus ayibangeli ubumpumputhe, inokunciphisa amandla okugxila ngaphandle kwamaglasi okanye i-lens kunye nefuthe elinokuchaphazela kakhulu umgangatho wobomi.
- I-Pellucid I-Degeneration Degeneration : I-Pellucid I-Degeneration Degeneration icingelwa ukuba yinto ethile ye-keratoconus. Kwixesha elidlulileyo, oogqirha abaninzi baye bafumanisa ngephutha i-Pellucid njenge keratoconus. Kukwabonakaliswa nokucocwa kwe-corneain inxalenye engaphantsi kunye neyengxube ye-cornea. Iimeko ezininzi zichaphazela iso linye okanye iso linye libi ngakumbi kunalo.
Inkqubo yoQhagamshelwano lweConal Cross
Umnqamlezo we-Corneal udibanisa iinzame zokomeleza iibhondi ngaphakathi kwe-cornea ukwenza uzinzo. Ugqirha wakho uza kuqala ukufaka amahlaya asehlokweni. Emva koko, ugqirha uya kususa uluhlu oluphezulu lwe-cornea yakho, okanye iiseli ze-epithelial, ukubonisa iintsika eziphakathi.
I-cornea evulekileyo iya kuhlamba isisombululo se-riboflavin esinyumba imizuzu engama-30. Amaconsi aseRiboflavin avunyelwe ukuba agcwalise i-cornea enye imizuzu engama-30 ngelixa evezwe kwindlela yokukhanya ye-ultraviolet (UVA). Ukukhanya kwe-UVA kubangela ukuphendula kweekhemikhali kunye ne-riboflavin eyenza ikhonkco kunye neebhondi ukuba zifake kwi-collagen ngaphakathi kwe-cornea ukwenza kube nzima. I-antibiotics iliso lehla okanye i-ointment isetyenziswe kwiso. Abanye oogqirha baya kufaka i-lens yokudibanisa i-lens kuze kube yilapho iiseli ze-epithelial zikhula, ezingathatha iintsuku ezi-2-4.
Inkqubo izama ukwenza i-cornea yomelele ngeenjongo zokuthintela ukuba imeko ibenyuka kwaye kwezinye iimeko, ibangela ukuba i-cornea ibuyele kwimoya yayo engokwemvelo.
I-Corneal Cross Ukudibanisa Ukubuyiswa
Emva kweentsuku ezimbalwa emva kokuxhunywa kwe-corneal cross, unakho ukuvuvukala kwe-corneal. Unokuziva unomsindo omncinci, ukutshisa okanye ukuvalelwa komzimba wangaphandle uze uphephe ngokupheleleyo. Amaconsi e-Antibiotic aqhelekelelwe kwiintsuku ezimbalwa. Nangona uninzi lwabantu alukho iingxaki emva kokuhlinzwa, abanye basengozini yokuphuhlisa i-clouding egciniweyo ye-cornea ekwazi ukunciphisa umboniso.
Kwiinyanga ezintandathu ezalandelayo, ugqirha uya kukubona ngokuphindaphindiweyo ukulinganisa umboniso wakho (ukukhankanya) kunye nokwenza imilinganiselo, njengemilinganiselo ye-thickness ( pachymetry ) okanye imephu ye-cornea (i- corneal mappography ) de i-cornea yakho igxininise. Kubalulekile ukuba uqaphele ukuba i-CXL ayibuyiselanga ngombono wakho ngenye indlela. Yenzelwe ukuqinisa i-cornea ukucotha okanye ukuyeka ukuqhubela phambili nokwenza ukuba i-cornea iyamukele ngakumbi ukudibanisa iingubo zelensi okanye enye indlela yokulungiswa kombono.
Into Omele Uyazi Ngomnqamlezo weConal Cross
I-CXL iphandwa ukuba ihambe kwindlela yokwelashwa "phambi kwelayini" ngokuchasene nenkathalo kamva yekeratoconus ukukhusela inkqubela phambili kunye nesidingo sokutshintshwa kwe-corneal. Abaphandi bajonga kwakhona kwi-CXL njengonyango olunokuthi lube nolwaphulo olunzulu lweziliso. Izifo ezithintekayo ezinokubangela izifo zingabangela ukonakala kwaye zidibanise i-cornea. I-CXL iboniswe ukuphathwa kwezi zifo xa i-antibiotics ingasebenzi kakuhle. Inkqubo yeCXL iphazamisa i-enzymes ehlaziyileyo ukuba iibhaktheriya zivelise kwaye zivimbela ukukhula kweebhaktheriya ngokwabo.
Ucwaningo luphanda nokuba i-CXL ingenziwa njengenxalenye yeenkqubo ezithile ze-LASIK ukuqinisa i-cornea nokunciphisa umngcipheko we-acneia corneal ectasia.
Imithombo:
UKarpecki, uPaul M no-Diana Shechtman. Ukujongwa kwi-corneal crosslinking. Ukuphononongwa kwe-Optometry, ngo-Agasti 2011.
Kabat, Alan G noJoseph W Sowka. I-CXL yezifo ezithathelwanayo? Ukuphononongwa kwe-Optometry. Disemba 2011.