Contact lenses for astigmatism
Toric contact lenses are intended for the correction of an astigmatism. An astigmatism is usually caused by an irregular curvature of the cornea that needs correction to enable perfect vision. That can be achieved with the help of aspheric contact lenses. Besides power, base curve, and diameter, toric contact lenses also have an axis and cylindrical power as special parameters necessary to correct astigmatism. This means that you will have to carefully fill out two additional values. Having trouble finding your exact values? Consult with your optician or ophthalmologist before buying any values or parameters that deviate from your prescription.