使用扫描激光偏振仪评估准分子原位角膜磨镶术后视网膜神经纤维层厚度测量情况。
Evaluation of retinal nerve fiber layer thickness measurement following laser in situ keratomileusis using scanning laser polarimetry.
作者信息
Dada Tanuj, Chaudhary Sunil, Muralidhar Rajamani, Nair Soman, Sihota Ramanjit, Vajpayee Rasik B
机构信息
Department of Clinical Ophthalmology, Dr. R. P. Centre for Ophthalmic Sciences, AIIMS, New Delhi, India.
出版信息
Indian J Ophthalmol. 2007 May-Jun;55(3):191-4. doi: 10.4103/0301-4738.31938.
AIM
To evaluate the effect of laser-assisted in situ keratomileusis (LASIK) on the measurement of retinal nerve fiber layer thickness by scanning laser polarimetry using customized corneal compensation in myopes.
MATERIALS AND METHODS
Scanning laser polarimetry was performed on 54 eyes of 54 healthy patients with myopia using the glaucoma diagnostics variable corneal compensation (GDx VCC) instrument (Laser Diagnostic Technologies, San Diego, California) before and a week after LASIK. The various parameters were compared using the Student's t test.
RESULTS
No statistically significant change was observed in any of the retinal nerve fiber layer parameters before and after LASIK.
CONCLUSIONS
While the measurement of retinal nerve fiber layer thickness by scanning laser polarimetry is affected by anterior segment birefringent properties and LASIK would be expected to produce changes in the same, customized corneal compensation using the GDx VCC seems to adequately compensate for these changes.
目的
评估准分子原位角膜磨镶术（LASIK）对近视患者采用定制角膜补偿的扫描激光偏振仪测量视网膜神经纤维层厚度的影响。
材料与方法
使用青光眼诊断可变角膜补偿（GDx VCC）仪器（激光诊断技术公司，加利福尼亚州圣地亚哥），在54例健康近视患者的54只眼中，于LASIK术前及术后一周进行扫描激光偏振仪检查。采用学生t检验比较各项参数。
结果
LASIK术前和术后，视网膜神经纤维层的任何参数均未观察到有统计学意义的变化。
结论
虽然扫描激光偏振仪测量视网膜神经纤维层厚度受眼前节双折射特性影响，且预计LASIK会产生相同变化，但使用GDx VCC进行定制角膜补偿似乎能充分补偿这些变化。
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