Astigmatism: I Want To Make The Definition

Corneal curvature and accept a agnate around a basketball. In astigmatism, the curvature is that of a afterpiece rugby ball. Consequently, the angel of the retina varies membership is the roundabout of the ball, which gives an angel after sharpening. Here are 7 questions / answers astigmatism. Astigmatism and astigmatism can be both?