准分子激光屈光性角膜切削术矫治视网膜复位术后屈光不正的效果

目的 探讨准分子激光屈光性角膜切削术（photorefractive keratectomy,PRK)对视网膜复位术后屈光不正的矫治疗效。方法 对因不同原因引起视网膜脱离行视网膜复位手术,且术后随访病情稳定时间＞7个月的屈光不正患者11例（11只眼）行PRK,术后随访时间＞12个月,观察视力、角膜内皮细胞密度和眼底情况。结果 全部患者PRK术后视力均达到或超过术前最佳矫正视力;平均角膜内皮细胞密度与术前比较,差异无显著意义（t检验,P＝0．36）。结论 PRK是治疗视网膜复位术后屈光不正安全、有效的方法;严格掌握手术适应证和手术时机是手术成功的关键。

Photorefractive keratectomy for treatment of ametropia after vitrectomy for retinal reattachment

Objective To evaluate the efficacy of photorefractive keratectomy (PRK) for the treatment of ametropia after vitrectomy for retinal reattachment. Methods PRK was used to treat 11 eyes of ametropia after victrectomy for more than seven months. The visual acuity, retina and corneal endothelial cell densities were investigated in a l2 month follow up study. Result The postoperative visual acuity of all the 11 eyes was equal to or above the best corrected visual acuity before the operation. Postoperatively, there was no significant change of the corneal endothelial cell densities compared with that before the operation. Conclusion PRK for ametropia after vitrectomy is an effective and safe surgery. But the indication must be selected appropriately.