Müller-Albach K A, Dick B, Pavlovic S
Universitäts-Augenklinik Giessen.
Ophthalmologe. 1995 Oct;92(5):677-80.
Conventional detachment surgery produces scleral indentation and can therefore lead to changes in the geometry of the bulbus. The aim of this research was to analyze the influence of scleral buckling (group A) and encircling elements (group B) on corneal topography, surgical induced astigmatism and axial length. In 19 cases with peripherally detached retinas we performed keratometry, videokeratoscopy and measured axial length preoperatively in the first week as well as 1 and 3 months postoperatively. Total preoperative astigmatism in group A was 0.49 D and in Group B 0.84 D. The surgically induced astigmatism calculated by vectoral analysis was in the first postoperative week 0.98 D and 1.92 D. 1 month postoperatively it was 0.74 D and 1.26 D, and after 3 months 0.89 D and 1.31 D. There was minimal change in the average axial length: 0.09 mm reduction in group A and 0.21 mm increase in group B after 3 months. Computerized videokeratoscopy was very effective in determining this slight, surgically induced astigmatism.
传统的视网膜脱离手术会造成巩膜压陷，因此可能导致眼球几何形状的改变。本研究的目的是分析巩膜扣带术（A组）和环扎术（B组）对角膜地形图、手术性散光和眼轴长度的影响。对19例周边视网膜脱离患者，我们在术前第1周以及术后1个月和3个月进行了角膜曲率测量、计算机辅助角膜地形图分析，并测量了眼轴长度。A组术前总散光为0.49 D，B组为0.84 D。通过矢量分析计算得出的术后第1周手术性散光，A组为0.98 D，B组为1.92 D。术后1个月，A组为0.74 D，B组为1.26 D；3个月后，A组为0.89 D，B组为1.31 D。平均眼轴长度变化极小：3个月后，A组减少0.09 mm，B组增加0.21 mm。计算机辅助角膜地形图分析在确定这种轻微的手术性散光方面非常有效。
