Uyilo lwe-lens ye-OptoTech HD oluqhubela phambili lugxininisa i-astigmatism engafunekiyo kwiindawo ezincinci zomphezulu we-lens, ngaloo ndlela yandisa iindawo zombono ocacileyo ngokugqibeleleyo ngeendleko zamanqanaba aphezulu obumnyama kunye nokuphazamiseka.Ngenxa yoko, iilensi eziqhubela phambili eziqina ngokuqhelekileyo zibonisa ezi mpawu zilandelayo: imigama ebanzi yommandla, imimandla ekufutshane nemxinwa, nangaphezulu, amanqanaba anyuka ngokukhawuleza e-astigmatism yomphezulu (iikhonto ezisondeleleneyo).