Monthly contact lenses toric lenses series cooper vision biomedics quantity 6 pieces type of lens soft lenses material ocufilcon d diopters 050 wearing time 1 month diameter 145 mm base curve 87 mgliche zylinder 0 75 1 25 1 75 2 25 mgliche achsen 10 180 oxygen permeability dk 19 water content 55 geeignet fr astigmatism