Monthly contact lenses toric lenses series cooper vision proclear quantity 6 pieces type of lens soft lenses material omafilcon a diopters 550 wearing time 1 month diameter 144 mm mgliche zylinder 0 75 1 25 1 75 2 25 mgliche achsen 10 180 oxygen permeability dkt 25 water content 62 geeignet fr astigmatism dry eyes