Monthly contact lenses toric lenses series bausch lomb soflens quantity 6 pieces type of lens soft lenses material alphafilcon a diopters 900 wearing time 1 month diameter 145 mm base curve 85 mgliche zylinder 2 75 0 75 1 25 1 75 2 25 mgliche achsen 10 180 oxygen permeability dk 32 water content 66 geeignet fr astigmatism