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通过对戴角膜接触镜患者停镜后进行定期角膜地形图观察，发现戴角膜接触镜可引起角膜变形，如中心区不规则散光、缺乏正常角膜的由中心向周围逐渐变扁平和丧失辐射性对称。停镜后角膜恢复正常形态的时间为2～8周，平均为4．07±1．76周。最长时间为12周。停镜2周左右角膜变化较明显。提示屈光性角膜手术前，对戴角膜接触镜患者要定期检查角膜地形图，直至角膜形态恢复正常，才可进行手术治疗。
By wearing corneal contact lens patients after the regular observation of corneal topography and found that wearing contact lenses can cause corneal deformity, such as irregular central astigmatism, the lack of normal cornea from the center gradually flattened and lost the radiation symmetry . Corneal back to normal after the time to form the normal 2 to 8 weeks, with an average of 4.07 ± 1.76 weeks. The longest time is 12 weeks. 2 weeks after stopping the corneal changes more obvious. Tip refractive corneal surgery before wearing corneal contact lens patients to regularly check the corneal topography until the corneal shape returned to normal before surgery.