角膜塑形镜停止矫治后患者角膜与屈光状况研究

Change of cornea shape and refractive status after orthokeratology discontinuation

摘要:

目的  探讨角膜塑形镜停止矫治后不同时间患者角膜与屈光状况，为其研究提供可参考依据。方法  共纳入30例(52只眼)配戴角膜塑形镜并有停戴史的近视患者作为研究对象，根据患者停戴时间分为A组（停戴时间<1个月）、B组（1个月≤停戴时间<3个月）与C组（停戴时间≥3个月），记录患者戴镜前及停戴后角膜形态与屈光状态。结果  A组与B组停戴后中央角膜厚度、角膜平K值、陡K值、平均K值及SRI均明显低于配戴前，差异有统计学意义（P <0.05）；且停戴后A组与B组中央角膜厚度、角膜平K值、陡K值、平均K值及SRI均明显低于C组，差异有统计学意义（P <0.05）。停戴后3组均无球镜度数及散光度数增加（P >0.05）。结论  角膜塑形镜可以有效控制近视的发展，且停戴后3个月以上，角膜形态及屈光状态均可恢复，有较好的安全性，可以作为近视的长期治疗方案。

Abstract:

Objective To study the change of cornea shape and refractive status after orthokeratology discontinuation. Methods A total of 30 patients (52 eyes) with a history of wearing and discontinuation of wearing corneal shape mirror were included. All the patients were divided into group A (stop wearing time < 1 month), group B (1 month ≤ stop wearing time < 3 months) and group C (stop wearing time ≥3 months). The cornea shape and refractive status after orthokeratology discontinuation were compared. Results The central corneal thickness, corneal K value, steep K value, average K value and SRI after orthokeratology discontinuation were significantly lower than those before wearing in the groups A and B (P < 0.05). After orthokeratology discontinuation, the central corneal thickness, corneal K value, steep K value, average K value and SRI in the groups A and B were obviously lower than those in the group C with significant differences (P < 0.05); while there were no differences in eyeglass degree and astigmatism degree after orthokeratology discontinuation in the three groups (P > 0.05). Conclusions The corneal morphology and central corneal thickness return to the original levels after three months of discontinuation of orthokeratology． The myopia had no significant progression after discontinuation.