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目的 探讨准分子激光屈光性角膜切削术 (PRK)后角膜地形图出现岛状隆起与患者各种因素的关系。方法 对连续 333例 (5 92只眼 )接受PRK治疗病人术后 6个月的角膜地形图进行回顾性分析 ,将地形图中出现中央岛 ,半岛 ,双峰岛的资料进行比较。结果 双眼出现岛状隆起的比例高于单眼。术后 1～ 3月岛状隆起明显且有不断增加的现象 ,6月时 5 2 6 3 %的岛状隆起消失。岛状隆起与角膜雾浊无关 ;双峰岛的隆起度较高 ,可导致散光 ,对术后最佳矫正视力有一定的影响。结论 PRK术后地形图岛状隆起的形成可能是部分个体特殊的术后反应过程。
Objective To investigate the relationship between island elevation of corneal topography and various factors of patients after excimer laser photorefractive keratectomy (PRK). Methods A retrospective analysis was performed on corneal topography of 333 consecutive patients (592 eyes) receiving PRK for 6 months after surgery. Data of central island, peninsula and bimodal island in topographic maps were compared. The results showed that the ratio of island bulge in both eyes than monocular. From January to March, the island-shaped uplift was obvious and there was a continuous increase. In June, 526 3% of the island-shaped uplift disappeared. Island bulge has nothing to do with corneal haze; bimodal island elevation higher, can lead to astigmatism, postoperative best corrected visual acuity have a certain impact. Conclusion PRK postoperative topography island formation may be part of the individual post-operative response.