Ngakhale kuchuluka kwa magalasi olumikizana ndi hydrogel ndiapamwamba, nthawi zonse amakhala osakhutiritsa potengera kutulutsa kwa okosijeni.Kuchokera ku hydrogel kupita ku silikoni hydrogel, tinganene kuti kudumpha kwapamwamba kwakwaniritsidwa.Chifukwa chake, monga diso labwino kwambiri pakalipano, ndi chiyani chabwino pa silicone hydrogel?
Silicone hydrogel ndi chinthu cha hydrophilic organic polima chokhala ndi mpweya wokwanira.Kuchokera pakuwona thanzi lamaso, nkhani yofunika kwambiri yomwe ma lens amafunikira kuthana nayo ndikuwongolera kutulutsa kwa okosijeni.Ma lens wamba a hydrogel amadalira madzi omwe ali mu lens monga chonyamulira kuti apereke okosijeni ku cornea, koma mphamvu yoyendetsa madzi ndi yochepa kwambiri ndipo imatuluka mosavuta.Komabe, kuwonjezera kwa silicon kumapangitsa kusiyana kwakukulu.Silicone monomerskukhala ndi dongosolo lotayirira ndi mphamvu zochepa za intermolecular, ndipo kusungunuka kwa okosijeni mwa iwo ndikwapamwamba kwambiri, zomwe zimapangitsa kuti mpweya wa silicone hydrogel upitirire kasanu kuposa magalasi wamba.
Vuto loti mpweya wa okosijeni uyenera kudalira madzi atha,ndi zabwino zina zabweretsedwa.
Ngati madzi a magalasi wamba akuchulukirachulukira, nthawi yovala ikachuluka, madzi amatuluka nthunzi ndipo amadzadza ndi misozi, zomwe zimapangitsa kuti maso onse awiri aume.
Komabe, silicone hydrogel imakhala ndi madzi oyenerera, ndipo madzi amakhalabe okhazikika ngakhale atavala, choncho sikophweka kutulutsa zowuma, ndipo magalasi ndi ofewa komanso omasuka pamene amalola cornea kupuma momasuka.
Zotsatira zake
magalasi opangidwa kuchokera ku silicone hydrogel nthawi zonse amakhala ndi hydrated komanso kupuma, kuwongolera chitonthozo ndikuchepetsa kuwonongeka kwa maso, zabwino zomwe sizingafanane ndi magalasi olumikizana pafupipafupi.Ngakhale sililicone hydrogel ingagwiritsidwe ntchito kupanga magalasi otayika afupikitsa ndipo sangagwiritsidwe ntchito kuzinthu zapachaka ndi theka-pachaka, ikadali chisankho chabwino kwambiri pazogulitsa zonse.
Nthawi yotumiza: Aug-16-2022
