| 摘要: |
| ［摘要］目的 了解先天性上睑下垂对角膜表面屈光力的影响．方法 采用计算机辅助的角膜地形图分析系统对昆明医科大学第一附属医院眼科2013年10月至2015年6月期间确诊为先天性上睑下垂病人45例、90只眼进行角膜地形图及不同光学区屈光力的分析，并对患者中正常眼及上睑下垂眼检查结果进行比较．结果 90只眼中55只为先天性上睑下垂眼，35只为正常眼．先天性上睑下垂眼中，弱视眼21只，占患眼的38.2%，弱视与上睑下垂程度没有相关性（P＞0.05）．先天性上睑下垂眼角膜地形图表现为两种类型:不对称的哑铃形（23只眼）和不规则形（32只眼），角膜最大屈光力值均出现在角膜水平轴下方象限．与正常眼比较，3 mm直径圆周角膜下方与上方平均屈光力差值没有统计学意义（P＞0.05），5 mm及7 mm直径圆周的下方与上方平均屈光力差值高于同直径正常眼（P＜0.01）. 结论 先天性上睑下垂导致角膜表面局部屈光力改变，弱视与上睑下垂程度无相关性． |
| 关键词: ［关键词］先天性上睑下垂 角膜地形图 弱视 角膜屈光力 |
| DOI： |
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| 基金项目:［基金项目］国家自然科学基金资助项目（81301952）；云南省教育厅科学研究基金资助项目（2013Y279） |
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| Effect of Congenital Ptosis on Refractive Power of the Corneal Surface |
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LI Xun1,2
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1.（1）Kunming Medical University，Kunming Yunnan 650500;2）The 1st Affiliated Hospital of Kunming Medical University，Kunming Yunnan 650032，China）
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| Abstract: |
| ［Abstract］Objective To investigate the effects of congenital ptosis on refractive power of the corneal surface. Methods Forty-five patients （90 eyes） with congenital ptosis in the First Affiliated Hospital of Kunming Medical University were examined from October 2013 to June 2015. Corneal topographic analysis was performed in both the ptosis and the normal eyes. The comparison between the ptotic eye and the normal eye was done according to the topographic results. Results Among 90 eyes， 55 were ptotic and 35 were normal. Amblyopia was detected in 21 ptotic eyes（38.2%）. No correlation was found between amblyopia and the severity of ptosis（χ2＝2.617，P＞0.05）. Ptotic eye showed an asymmetrical bow tie pattern（23 eyes） and an irregular pattern （32 eyes） on corneal photography and the maximum refractive power occurred at the inferior quadrant of the corneal horizontal axis. Difference value of the average refractive power of the cornea between lower side and upper side in ptotic eyes was higher than that of the normal eyes at 5mm and 7mm diameter areas（P＜0.01）except for 3mm diameter area（P＞0.05）. Conclusion Congenital ptosis may lead to the change of refractive power of the local corneal surface. Amblyopia has no correlation with the severity of ptosis. |
| Key words: ［Key words］Congenital ptosis Corneal topography Amblyopia Corneal surface refractive power |