Okuqukethwe
Ngokuthuthuka kwe-keratoconus esigabeni sokuqala, kungenzeka ukulungisa izinkinga zombono ngamalensi okuxhumana ajwayelekile. Kodwa ngokuhamba kwesikhathi, ukukhethwa kwamalensi athile, i-keratoconus kuyadingeka.
I-Keratoconus yenzeka ngenxa yenqubo ye-dystrophic ku-cornea, okuholela ekunciphiseni kwayo, ukwakheka kwe-protrusion emise okwe-cone. Nakuba i-pathology ngokwayo iye yachazwa isikhathi eside, imbangela eqondile yokuthuthukiswa kwayo ayizange isungulwe kuze kube manje, futhi ngemva kokuxilongwa, kunzima ukunquma ukuthi isifundo sizoba yini.
Ukubonakaliswa kwenzeka esemncane, ngokuvamile eminyakeni engu-15-25, ukuthuthukiswa kungenzeka ngokushesha futhi kancane, ngezinye izikhathi lesi sifo sinyamalala ngokuzenzakalelayo, kodwa kwezinye izimo ukuqhubekela phambili kwenzeka ngokuguqulwa kwe-cornea.
Phakathi kwezikhalazo eziyinhloko, kungase kube nombono ophindwe kabili, izimpawu ze-myopia, okuba yisizathu sokukhethwa kwezibuko noma ama-lens, kodwa zisiza isikhathi esifushane futhi ziveze imbangela yangempela ye-pathology ku-topography ye-cornea.
Ngokuyinhloko, nge-keratoconus, i-myopia noma i-astigmatism ivela, ehlotshaniswa noshintsho ekugoqeni kwe-cornea, kodwa ama-lens ajwayelekile noma izibuko ziba "zincane" ngaphansi konyaka ngenxa yokuqhubeka kokuphazamiseka kwamehlo.
Ngingakwazi ukugqoka amalensi ngekeratoconus?
Kubalulekile ukugcizelela ukuthi ukusetshenziswa kwezibuko noma ama-lens ekuthuthukiseni i-keratoconus akusizi ekwelapheni i-pathology. Imikhiqizo ye-Optical isiza kuphela ukunxephezela ukukhubazeka okukhona okubukwayo, kodwa isifo ngokwaso singaqhubeka nokuqhubeka kwaso.
Izingilazi zokulungiswa kwama-pathologies okubukwayo ngokumelene nesizinda se-keratoconus azivamile ukusetshenziswa, azikwazi ukuqeda ngokuphelele ukuphazamiseka. Ama-lens othintana nawo afaneleka kahle ebusweni be-cornea, ngakho-ke asiza ekuqedeni ukuphazamiseka okubukwayo.
Imaphi amalensi alungele i-keratoconus?
Ama-lens ajwayelekile athambile angasetshenziswa kuphela esigabeni sokuqala se-pathology, uma izinguquko ze-refractive zifinyelela ku-2,5 diopters. Kamuva, umbono ocacile ungafinyelelwa ngokusebenzisa i-toric design lens. Ngaphezu kwalokho, kuyadingeka ukukhetha amamodeli anempahla ye-silico-hydrogel, ngenxa yokungena kwegesi ephezulu.
Esigabeni sokugcina sesifo, kusetshenziswa amalensi akhethekile e-keratoconus, enziwa kuphela uku-oda ngokuya ngosayizi ngamunye we-cornea. Zingaba ezithambile noma ezinzima noma ezixubile.
Uyini umehluko phakathi kwamalensi ekeratoconus namalensi avamile?
Ukukhethwa kwamalensi ezigulini ezine-keratoconus kufanele kusingathwe kuphela yi-ophthalmologist. Zizokwenziwa ngabanye, ngokusho kobukhulu be-cornea. Uma lokhu kuyimikhiqizo ethambile eyenziwa ngabanye, ihlukaniswe ngamaqembu amabili:
- i-axisymmetric, enokuqina phakathi nendawo - lawa ma-lens angakwazi ukulungisa i-myopia, kodwa akakwazi ukuqeda i-astigmatism, afaneleka kuphela i-keratoconus, lapho i-cornea ilimala kancane phakathi nendawo kunaseceleni;
- ama-toric lens azosiza nge-astigmatism, ikakhulukazi ngezinga eliphezulu.
Uma lawa angama-lens aqinile, nawo ahlukaniswa ngosayizi futhi ahlukaniswe ngamaqembu amabili:
- nge-diameter encane (kufika ku-10 mm), i-cornea - imvamisa amapheya amaningana ahlukene amalensi emiklamo ehlukene ayenziwa ukuze a-odwe, akhethelwe ukunethezeka okukhulu kokugqoka.
- enosayizi omkhulu (kusuka ku-13,5 mm noma ngaphezulu), i-corneoscleral noma i-scleral, imikhiqizo engenisa igesi okuthi, uma igqokile, iphumule ku-sclera ngaphandle kokuthinta indawo ka-uXNUMXbuXNUMXbthe keratoconus uqobo - inethezekile, kepha inzima kakhulu. ukukhetha.
Imikhiqizo ehlanganisiwe iyinhlanganisela yamaqembu amabili adlule. Ingxenye yawo emaphakathi yenziwe nge-oxygen-permeable material, kodwa emaphethelweni athambile, enziwe nge-silicone hydrogel. Lawa ma-lens akhululekile, ahlanganiswe kahle ku-cornea, ahlinzeka ngokulungiswa kombono wekhwalithi ephezulu, kodwa awakwazi ukusetshenziswa lapho i-cornea yomile.
Ukubuyekezwa kodokotela mayelana namalensi e-keratoconus
"Njengoba kunikezwe i-astigmatism enzima ehambisana ne-keratoconus, njengomthetho, ukulungiswa kokuxhumana kuba inketho yokufeza ukubukeka okuhle kakhulu," kusho. udokotela wamehlo uMaxim Kolomeytsev. - Isikhathi kanye nemvamisa yokushintshwa kwamalensi kungahluka kakhulu kuye ngohlobo lwamalensi akhethiwe (amalensi okuxhumana athambile noma amalensi aqinile angena igesi) kanye nezinga lokuqhubeka kwesifo.
Imibuzo nezimpendulo ezidumile
Sikhulume nabo udokotela wamehlo uMaxim Kolomeytsev mayelana nenkinga ye-keratoconus kanye nokulungiswa kwe-lens kuyo, kwacacisa amanye ama-nuances wokwelapha.