Abstract

目的 探讨高度近视后巩膜葡萄肿视网膜劈裂的影象学特征,及其发生机制.方法 高度近视后巩膜葡萄肿(Posterior Staphyloma,PS)患者29例(40眼),行A超测眼轴、B超检查、裂隙灯、散瞳间接检眼镜、眼底照像、最佳矫正视力及光学相干断层(optical coherence tomography,OCT)检查,用OCT测量黄斑区视网膜神经上皮层的厚度.结果 OCT显示40眼中有10眼(25%)有视网膜劈裂.其OCT图像特征主要为一个广泛的低反射空间将视网膜神经上皮层分为内外两层,中等度柱状反射桥接两层,色素上皮层前不规则细的中等度反射附着.无视网膜劈裂PS眼黄斑中心凹、距离中心凹150μm、500μm、1000μm处视网膜神经上皮层的厚度分别为129.33±17.69μm,143.68±16.17μm,178.92±20.53μm,210.45±23.89μm,均与眼轴长呈负相关.结论 OCT能清晰观察PS眼的视网膜劈裂,PS眼视网膜劈裂较常见,它与眼轴关系密切。

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