Ornek Kemal, Yalçindag F Nilüfer, Kanpolat Ayfer, Günalp Ilhan
Department of Ophthalmology, Ankara University School of Medicine, Ankara, Turkey.
Cornea. 2002 Nov;21(8):803-6. doi: 10.1097/00003226-200211000-00015.
To evaluate the changes in corneal topography after scleral buckling surgery for retinal detachment.
Twenty-one eyes of 21 patients with the diagnosis of retinal detachment were included in this prospective study. Scleral buckling surgery was performed on all patients. The corneal topography of each was measured before surgery and at 1 week and 1 and 6 months after surgery by computer-assisted videokeratoscopy using the EyeSys 2000 Corneal Analysis System. Changes in corneal videokeratographies were analyzed using the Holladay Diagnostic Summary (HDS) software package.
A statistically significant central corneal steepening (average, 1.8 diopter) was noted 1 week after surgery. The total and irregular astigmatic components both revealed a significant but transient increase in the first postoperative month. All these topographic changes persisted for as long as 6 months but returned to preoperative values afterward.
Scleral buckling was found to induce transient changes in corneal topography producing both myopia and corneal astigmatism. Videokeratography is helpful for documenting such corneal changes after scleral buckling surgery for retinal detachment.
评估视网膜脱离巩膜扣带术后角膜地形图的变化。
本前瞻性研究纳入了21例诊断为视网膜脱离患者的21只眼。所有患者均接受了巩膜扣带手术。术前以及术后1周、1个月和6个月时，使用EyeSys 2000角膜分析系统通过计算机辅助视频角膜地形图测量每只眼的角膜地形图。使用Holladay诊断总结（HDS）软件包分析角膜视频角膜地形图的变化。
术后1周发现角膜中央明显变陡（平均1.8屈光度）。术后第1个月，总散光和不规则散光成分均显示出显著但短暂的增加。所有这些地形学变化持续长达6个月，但之后恢复到术前值。
发现巩膜扣带术可引起角膜地形图的短暂变化，产生近视和角膜散光。视频角膜地形图有助于记录视网膜脱离巩膜扣带术后的此类角膜变化。
