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.

 
  • 結果 兩組角膜的垂直子午線(xiàn)的曲率大于水平子午線(xiàn)的曲率,即表現為循規性的托力克面,小于0.;9D的角膜散光一般不表現出眼散光;
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