Nangona inani leelensi zoqhagamshelwano ze-hydrogel liphezulu, bezisoloko zinganeliseki ngokubhekiselele ekungeneni kweoksijini. Ukusuka kwi-hydrogel ukuya kwi-silicone hydrogel, kunokuthiwa kubekho inqanaba eliphezulu. Ngoko ke, njengeliso loqhagamshelwano elingcono okwangoku, yintoni elungileyo kangaka nge-silicone hydrogel?
I-silicone hydrogel yinto ye-polymer yendalo ethanda amanzi kakhulu ene-oxygen permeability ephezulu. Ngokwembono yempilo yamehlo, umba ophambili ekufuneka ujongwane neelensi zoqhagamshelwano kukuphucula ukungena kwe-oxygen. Iilensi zonxibelelwano ze-hydrogel eziqhelekileyo zixhomekeke emanzini akwilensi njengomthwali ukuhambisa i-oxygen kwi-cornea, kodwa amandla okuhambisa amanzi anqongophele kakhulu kwaye aphuma ngokukhawuleza.Nangona kunjalo, ukongezwa kwe-silicon kwenza umahluko omkhulu.Iimonomers zesiliconezinesakhiwo esikhululekileyo kunye namandla aphantsi phakathi kweemolekyuli, kwaye ukunyibilika kweoksijini kuzo kuphezulu kakhulu, nto leyo eyenza ukuba ukungena kweoksijini kwii-silicone hydrogels kuphakame ngokuphindwe kahlanu kuneelensi eziqhelekileyo.
Ingxaki yokuba ukungena kweoksijini kufuneka kuxhomekeke kumthamo wamanzi isonjululwe,kunye nezinye izibonelelo eziye zaziswa.
Ukuba umthamo wamanzi kwiilensi eziqhelekileyo uyanda, njengoko ixesha lokuguguleka lisanda, amanzi ayaphela aze azaliswe ziinyembezi, nto leyo ekhokelela ekubeni omabini amehlo ome.
Nangona kunjalo, i-silicone hydrogel inomthamo wamanzi ofanelekileyo, kwaye amanzi ahlala eqinileyo nasemva kokuba egugile, ngoko ke akulula ukuvelisa ukoma, kwaye iilensi zithambile kwaye zikhululekile ngelixa zivumela i-cornea ukuba iphefumle ngokukhululekileyo.
Nje ngeziphumo
Iilensi zoqhagamshelwano ezenziwe nge-silicone hydrogel zihlala zimanzi kwaye ziyaphefumla, ziphucula intuthuzelo kwaye zinciphisa umonakalo emehlweni, iingenelo ezingenakuthelekiswa nanto kwiilensi zoqhagamshelwano eziqhelekileyo.Nangona i-silicone hydrogel ingasetyenziswa kuphela ukwenza iilensi ezilahlwayo ezisebenza ngomjikelo omfutshane kwaye ayinakusetyenziswa kwizinto ezilahlwayo zonyaka nezesiqingatha sonyaka, iseyeyona ndlela ilungileyo kuzo zonke iimveliso.
Ixesha lokuthumela: Agasti-16-2022
