Result the vertical curves of both groups are stronger than the horizontol curves, ie, it is with the rule of Toric surface.There is no ocular astigmatism when the corneal astigmatism is under 0.9DC.

• 结果 两组角膜的垂直子午线的曲率大于水平子午线的曲率，即表现为循规性的托力克面，小于0.；9D的角膜散光一般不表现出眼散光；