Idizayini yelensi eqhubekayo ye-OptoTech SD isabalalisa i-astigmatism engafuneki kuzo zonke izindawo ezinkulu zendawo yelensi, ngaleyo ndlela yehlise ubukhulu bayo bonke bokufiphala ngezindleko zokunciphisa izindawo zokubona okucace kahle.Iphutha le-astigmatic lingase lithinte indawo yebanga.Ngakho-ke, amalensi aqhubekayo athambile ngokuvamile abonisa izici ezilandelayo: Amabanga amancanyana, izindawo eziseduze ezibanzi, kanye namazinga akhuphuka kancane, akhuphuka kancane e-astigmatism (amakhonsathi anezikhala ezibanzi).Ubuningi.inani le-astigmatism engadingeki liyehliselwa ezingeni elimangalisayo le-approx.U-75% wamandla okungeza.Lokhu kwehluka komklamo ngokwengxenye kusebenza ezindaweni zokusebenza zesimanje.