Goren M B, Dana M R, Rapuano C J, Gomes J A, Cohen E J, Laibson P R
Cornea Service, Wills Eye Hospital, Philadelphia, PA, USA.
Ophthalmic Surg Lasers. 1997 Mar;28(3):208-14.
The authors sought to determine whether the immediate corneal topographic changes induced by selective suture removal for astigmatism after keratoplasty were stable over time.
Computerized videokeratoscopic images were obtained prior to and immediately following suture removal in 14 patients, and then again at the next postoperative visit 4 to 6 weeks later. These images were analyzed and statistically compared for central corneal power and vector of the central 3-mm corneal astigmatism.
Most of the topographic changes induced by suture removal occurred immediately. However, continued shifting in corneal curvature did take place over the subsequent 4 to 6 weeks. Unpredictable shifts were more pronounced in patients whose surgery had been performed more than 20 months prior to suture removal.
Computerized videokeratoscopy graphically elucidates continued shifts in corneal topography following the removal of sutures for the control of astigmatism after keratoplasty.
作者试图确定角膜移植术后为矫正散光而进行选择性缝线拆除所引起的即时角膜地形图变化是否随时间推移保持稳定。
对14例患者在缝线拆除前及拆除后即刻获取计算机化视频角膜地形图图像，然后在术后4至6周的下次随访时再次获取。对这些图像进行分析，并对中央角膜屈光力和中央3毫米角膜散光矢量进行统计学比较。
缝线拆除引起的大多数地形图变化立即出现。然而，在随后的4至6周内角膜曲率确实持续发生变化。在缝线拆除前手术已超过20个月的患者中，不可预测的变化更为明显。
计算机化视频角膜地形图以图形方式阐明了角膜移植术后为控制散光而拆除缝线后角膜地形图的持续变化。
