Iyo OptoTech HD inofambira mberi lens dhizaini inoisa iyo isingadikanwi astigmatism munzvimbo diki dzenzvimbo yelens, nekudaro ichiwedzera nzvimbo dzekuona dzakanyatsojeka nekurasikirwa kwemazinga epamusoro ekudzima uye kukanganisa.Nekuda kweizvozvo, malenzi akaomarara anofambira mberi anowanzo ratidza hunhu hunotevera: nzvimbo dzakafara, dzakatetepa padyo nenzvimbo, uye yakakwirira, inowedzera nekukurumidza mazinga epasi astigmatism (padhuze akaparadzana makonditi).