Abo banxiba iilensi zogqithiso ixesha elide bayazi kakuhle indlela abanokukhathala ngayo amehlo abo ngokuhlwa. Oku kwenzeka, okokuqala, ngenxa yokungena kwe-oxygen kwi-cornea. I-silicone-hydrogel lens isombulula le ngxaki ngokupheleleyo - ngokungafani ne-hydrogel lenses eziqhelekileyo, zivumela ukuba amehlo athathe inxaxheba ngokupheleleyo kwi-oxygen exchange.
Iimveliso ezintle zivelisa i-silicone-hydrogel lens
Umxholo wamanzi we-hydrogel kunye ne-silicone-hydrogel yokuqhagamshelana neelensi zifana noko, kodwa i-Dk / t isalathisi isilinganiselo se-oksijeni yokubeka ubungqina bentsimbi kwiziko-ezi zihlandlo zingaba zihlandlo eziliqela. Umzekelo: i-Lure PureVision ukusuka ku-Bausch & Lomb ukusuka kwi-silicone hydrogel ibe ne-Dk 110, kunye ne-hydrogel lens yenkampani efanayo yaseMerika, kodwa kwi-series ye-SofLens 59 inokuqhayisa umyinge we-oksijini conductivity ye-16.5 kuphela. Zomibini kunye nezinye iilensi zenzelwe ukutshintshwa kwenyanga.
Iilensi eziphezulu kakhulu ze-silicone hydrogel ziyafumaneka kubavelisi abakhulu:
- Umbono weCiba;
- Alcon;
- IBausch & Lomb;
- Cooper Vision;
- Zeiss.
Unomgca wee-silicone-hydrogel lenses kunye neelensi zokugqoka ixesha elide. Ngenxa yexabiso eliphezulu le-Dk, kwaba lula ukugqoka ii-lens zoqhagamshelwano kwiinyanga eziliqela. Ngoku awukwazi ukususa i-lens ebusuku ngaphandle komonakalo emehlweni. Isisombululo se-silicone-hydrogel lens ayifani ngokuqhelekileyo.
Umbala we-silicone-hydrogel lens
Ngenxa yokuba ama-lens adibeneyo afana ne-pigment, ukukwazi ukuqhuba i-oksijeni kuncitshiswa kakhulu. Nangona ngokufaka i-silicone kwi-hydrogel, ingxaki ayikwazi ukulungiswa ngokupheleleyo - iilensi zemibala ayikwazi ukugqithwa ngaphezu kweeyure ezili-12 ngokulandelana. Sekunjalo, bahle kakhulu emehlweni ethu. I-lens ezigqithise kakhulu kumbala we-silicone hydrogel-Air Optix Umbala ukusuka kwinkampani yaseMelika i-Alcon.