翼状胬肉手术对对比敏感度和角膜地形图变化的影响。

The effect of pterygium surgery on contrast sensitivity and corneal topographic changes.

作者信息

Oh Joo Youn, Wee Won Ryang

机构信息

Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea.

出版信息

Clin Ophthalmol. 2010 Apr 26;4:315-9. doi: 10.2147/opth.s9870.

DOI:10.2147/opth.s9870

PMID:20463799

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2861938/

Abstract

PURPOSE

To investigate the effect of pterygium surgery on corneal topography and contrast sensitivity.

PATIENT AND METHODS

The IRB approved this prospective, nonrandomized, self-controlled study. Computerized videokeratography (Orbscan II) was performed in 36 patients with primary pterygia, both before and 1 month after pterygium excision with limbal-conjunctival autografting. The topographic parameters were compared. Spatial contrast sensitivity testing was performed using VCTS 6500. Differences between preoperative and postoperative values were evaluated statistically.

RESULTS

The mean Sim K astigmatism and irregularity index, significantly decreased after pterygium surgery. The mean refractive power significantly increased after the operation. The "with-the-rule" astigmatism induced by pterygium became "against-the-rule" astigmatism after pterygium removal (P = 0.041). The contrast sensitivity of 6, 12, and 18 cycles per degree, significantly increased from 1.55 +/- 0.28, 0.97 +/- 0.47, and 0.29 +/- 0.16 to 1.72 +/- 0.18, 1.21 +/- 0.44, and 0.65 +/- 0.48, respectively (P = 0.007, <0.001, <0.001, respectively).

CONCLUSIONS

Pterygium surgery significantly reduces corneal topographic astigmatism and improves contrast sensitivity.

摘要

目的

探讨翼状胬肉手术对角膜地形图及对比敏感度的影响。

患者与方法

本前瞻性、非随机、自身对照研究获机构审查委员会批准。对36例原发性翼状胬肉患者在翼状胬肉切除联合自体角膜缘结膜移植术前及术后1个月进行计算机化视频角膜地形图检查（Orbscan II）。比较地形图参数。使用VCTS 6500进行空间对比敏感度测试。对术前和术后值的差异进行统计学评估。

结果

翼状胬肉手术后平均Sim K散光和不规则指数显著降低。术后平均屈光力显著增加。翼状胬肉引起的“顺规”散光在翼状胬肉切除后变为“逆规”散光（P = 0.041）。每度6、12和18周期间的对比敏感度分别从1.55±0.28、0.97±0.47和0.29±0.16显著提高到1.72±0.18、1.21±0.44和0.65±0.48（P分别为0.007、<0.001、<0.001）。