Ba apereng li-lens nako e telele ba tseba hantle hore na mahlo a bona a khathala joang mantsiboea. Sena se etsahala, pele ho tsohle, ka lebaka la ho fihlella ha maemo ho oksijene ho cornea. Li-lisi-hydrogel lenses li rarolla bothata bona ka botlalo - ho fapana le li-lens tse tloaelehileng tsa hydrogel, li lumella mahlo ho kenya letsoho ka ho feletseng phetohong ea oksijene.
Lihlahisoa tse ntle ka ho fetisisa tse hlahisang lilense tsa silicone-hydrogel
Metsi a li-hydrogel le li-lensisi tsa hydriel-hydrogel li batla li tšoana, empa index Dk / t ke karolelano ea oksijene e nang le bothata ba lensishene bohareng - e qetellang e ka ba makhetlo a 'maloa a phahameng. Mohlala: Lensense tsa PureVision tse tsoang Bausch & Lomb ho tloha silicone hydrogel li na le Dk 110, le lenses tsa Hyrogrogel tsa khoebo e le 'ngoe ea Amerika, empa ho tsoa letotong la SofLens 59 le ka ithorisa ka coefficient ea oksijene conductivity ea 16,5 feela. Lilile tse ling le tse ling li etselitsoe ho nkeloa sebaka ka khoeli.
Lisebelisoa tse phahameng ka ho fetisisa tsa silicone hydrogel li fumaneha ho tswa ho baetsi ba kholo:
- Ciba Vision;
- Alcon;
- Bothata le Lomb;
- Cooper Vision;
- Seiss.
Ba na le mola oa lisebelisoa tsa silicone-hydrogel le letsatsi le le leng tsa liaparo tsa nako e telele. Ka lebaka la litekanyetso tse phahameng tsa Dk, ho ile ha khoneha ho tsoela pele ho apara lensisi tsa likhoeli tse 'maloa. Hona joale ha u khone ho tlosa lense bosiu ntle le ho senya mahlo. Tharollo ea li-lenses tsa silicone-hydrogel ha e fapane le e tloaelehileng.
Mobala oa silicone-hydrogel lenses
Ka lebaka la hore lilense tse kopantsoeng li na le pigment, matla a bona a ho tsamaisa oksijene a fokotsehile haholo. Esita le ka ho eketsa silicone ho hydrogel, bothata bo ke ke ba rarolloa ka botlalo - lenses tsa 'mala ha li khone ho apara ka nako e telele ho feta lihora tse 12 ka tatellano. Leha ho le joalo, li thabisa haholo mahlong a rona. Lenseli tsa mmala tse ratoang ka ho fetisisa ho tloha silicone hydrogel - Air Optix Mmala ho tswa ho Khampani ea Alcon.