Nangona inani le-hydrogel contact lens liphezulu, lihlala linganelisekanga ngokwemiqathango ye-oxygen permeability.Ukusuka kwi-hydrogel ukuya kwi-silicone hydrogel, kunokuthiwa ukuba ukuxhuma okusemgangathweni kuphunyeziwe.Ke, njengelona liso libalaseleyo lokunxibelelana okwangoku, yintoni elungileyo malunga ne-silicone hydrogel?
I-Silicone hydrogel yimathiriyeli ye-hydrophilic organic polymer ene-oksijini ephezulu yokungena.Ngokombono wempilo yamehlo, umba ophambili ekufuneka ujongwe ziilensi zonxibelelwano kukuphucula ukunyanzeliswa kweoksijini.Iilensi zoqhagamshelwano ze-hydrogel eziqhelekileyo zixhomekeke kumanzi aqulethwe kwilensi njengomthwali wokuhambisa ioksijini kwi-cornea, kodwa amandla okuthutha amanzi anqongophele kakhulu kwaye aphuphuma lula.Nangona kunjalo, ukongezwa kwe-silicon kwenza umahluko omkhulu.Ii-silicone monomersibe nesakhiwo esikhululekileyo kunye nemikhosi ephantsi ye-intermolecular, kwaye ukunyibilika kwe-oksijini kuzo kuphezulu kakhulu, okwenza ukuba i-oxygen permeability ye-silicone hydrogels ibe ngokuphindwe kahlanu ngaphezu kweelensi eziqhelekileyo.
Ingxaki yokuba i-oxygen permeability kufuneka ixhomekeke kumxholo wamanzi iye yasonjululwa,kunye nezinye iingenelo zenziwe.
Ukuba umxholo wamanzi weelensi eziqhelekileyo unyuswa, njengoko ixesha lokugqoka linyuka, amanzi aphuphuma kwaye azaliswe ngeenyembezi, okukhokelela ekomeni kwamehlo omabini.
Nangona kunjalo, i-silicone hydrogel inomxholo ofanelekileyo wamanzi, kwaye amanzi ahlala ezinzile nasemva kokugqoka, ngoko akulula ukuvelisa ukoma, kwaye iilensi zithambile kwaye zikhululekile ngelixa zivumela i-cornea ukuba iphefumle ngokukhululekile.
Nje ngeziphumo
iilensi zoqhagamshelwano ezenziwe kwi-silicone hydrogel zihlala zimanzi kwaye ziphefumula, ziphucula induduzo kunye nokunciphisa umonakalo wamehlo, iingenelo ezingenakulinganiswa neelensi zoqhagamshelwano rhoqo.Nangona i-silicone i-hydrogel ingasetyenziselwa kuphela ukwenza iilensi ezilahlayo zomjikelo omfutshane kwaye ayinakusetyenziswa kwizinto ezilahlayo zonyaka kunye nesiqingatha sonyaka, iselona khetho lubalaseleyo kuzo zonke iimveliso.
Ixesha lokuposa: Aug-16-2022
