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目的 探讨共焦激光断层扫描 (scanning laser tomography,SL T)在评价黄斑裂孔手术疗效中的作用。 方法 采用德国海德堡公司的视网膜断层扫描仪 (Heidelberg retina tomograph,HRT) ,检测14例黄斑裂孔患者 15只患眼黄斑部视网膜地形图参数 ,并对其中 11只眼行玻璃体视网膜手术前后视网膜地形图差异进行分析。 HRT扫描野设置为 15°× 15°,扫描深度范围为 1.5～ 2 .0 mm。每只受检眼探测 3次 ,取 3次图像的均值分析。 结果 HRT定量检测显示 15只眼黄斑裂孔的平均面积为 (0 .4 99± 0 .34)mm2 ,裂孔最大深度为 (0 .2 84± 0 .11) mm。 11只黄斑裂孔眼玻璃体视网膜手术后裂孔周围视网膜高度较手术前明显降低 ,手术后裂孔最大深度为 (0 .0 6 3± 0 .0 4 ) mm。 结论 SL T能探测黄斑裂孔的三维结构 ,并作定量的地形图参数分析 ,可作为一种客观评价黄斑裂孔手术解剖疗效的有效手段
Objective To explore the role of scanning laser tomography (SL T) in evaluating the curative effect of macular hole surgery. Methods Heidelberg retina tomograph (HRT) of Heidelberg Company in Germany was used to detect 15 macular retinal topography parameters in 14 patients with macular hole, and 11 of them were examined with retinal topography before and after vitreoretinal surgery Analyze. The HRT scan field is set to 15 ° × 15 ° with a scan depth range of 1.5-2.0 mm. Each examined eye detection 3 times, take 3 times the average image analysis. Results HRT quantitative examination showed that the average area of macular hole in 15 eyes was (0.49 ± 0.34) mm2 and the maximum depth of the hole was (0.224 ± 0.11) mm. The height of the retina around the posterior orifice of vitreoretinal surgery in 11 macular holes was significantly lower than that before surgery. The maximum depth of the fractures after operation was (0. 06 ± 0. 04) mm. Conclusion SL T can detect the three-dimensional structure of macular hole and make quantitative topographic parameter analysis, which can be used as an objective method to objectively evaluate the curative effect of macular hole surgery