上睑成形术后对比敏感度增加和功能性视敏度改善的原因是什么？

What causes increased contrast sensitivity and improved functional visual acuity after upper eyelid blepharoplasty?

作者信息

Kim Jung Wan, Lee Hwa, Chang Minwook, Park Minsoo, Lee Tae Soo, Baek Sehyun

机构信息

From the *Department of Ophthalmology, Korea University College of Medicine; †Department of Ophthalmology, KEPCO Medical Center; and ‡Department of Ophthalmology, Nune Eye Hospital, Seoul, Republic of Korea.

出版信息

J Craniofac Surg. 2013 Sep;24(5):1582-5. doi: 10.1097/SCS.0b013e318292c5ac.

DOI:10.1097/SCS.0b013e318292c5ac

PMID:24036731

Abstract

PURPOSE

The objective of this study was to report the cause of increased contrast sensitivity and improved functional visual acuity after upper eyelid blepharoplasty.

METHODS

Twenty-two eyelids of 16 patients with dermatochalasis and involutional ptosis were prospectively studied. Contrast sensitivity, corneal topography, high-order aberration (HOA), and degree of lash ptosis were examined and recorded before and at 1 month after upper eyelid blepharoplasty. A Wilcoxon signed rank test was performed to compare the difference.

RESULTS

The contrast sensitivity of patients significantly increased in every spatial frequency and light condition. Corneal topography showed no difference before and after blepharoplasty. Ocular HOA, especially total HOA, third-order, fourth-order, trefoil, coma, and second astigmatism decreased significantly after surgery (P = 0.008, 0.011, 0.028, 0.033, 0.038, and 0.049, respectively). The degree of lash ptosis also decreased after blepharoplasty (P = 0.046).

CONCLUSIONS

In our study, increased contrast sensitivity and improved functional visual acuity after upper eyelid blepharoplasty were caused by changes in ocular HOA and the degree of lash ptosis after surgery. There were no changes in corneal topography or astigmatism.

摘要

目的

本研究的目的是报告上睑成形术后对比敏感度增加和功能性视力改善的原因。

方法

对16例患有皮肤松弛症和退行性上睑下垂的患者的22只眼睑进行前瞻性研究。在上睑成形术前和术后1个月检查并记录对比敏感度、角膜地形图、高阶像差（HOA）和睫毛下垂程度。采用Wilcoxon符号秩检验比较差异。

结果

患者的对比敏感度在每个空间频率和光照条件下均显著增加。角膜地形图显示上睑成形术前和术后无差异。眼部高阶像差，尤其是总高阶像差、三阶、四阶、三叶草像差、慧差和二级散光在手术后显著降低（P分别为0.008、0.011、0.028、0.033、0.038和0.049）。上睑成形术后睫毛下垂程度也降低（P = 0.046）。