Pérez-Torregrosa V T, Menezo J L, Harto M A, Maldonado M J, Cisneros A
Department of Ophthalmology, La Fe University Hospital, Valencia, Spain.
J Refract Surg. 1995 Jan-Feb;11(1):26-30. doi: 10.3928/1081-597X-19950101-08.
Topography measures the centration in refractive and corneal refractive surgery, but until recently there was no effective method to measure decentration in intraocular lens (IOL) implantation.
We measured the decentration of 22 phakic eyes, in 14 high myopic patients, based upon photographs of the anterior segment using a digital analysis system (IMAGEnet Topcon Corporation 1988, Tokyo, Japan). These eyes had undergone IOL implantation for the correction of myopia with Worst-Fechner iris claw lenses. Decentration was measured with respect to the centers of both the cornea and pupil.
Mean decentration of the IOL center from the cornea center was 0.51 +/- 0.25 mm (range, 0 to 0.8374 mm). When measured with respect to the center of the pupil, the average decentration was 0.47 +/- 0.29 mm (range, 0.182 to 0.9341 mm). A positive correlation between the decentration measurements of the two methods was found (p < .01 indicated statistical significance).
This digital imaging system (IMAGEnet) accurately measured decentration of IOLs in myopic eyes.
在屈光手术和角膜屈光手术中，地形图可测量中心定位，但直到最近，在人工晶状体（IOL）植入术中仍没有有效的方法来测量偏心。
我们基于使用数字分析系统（IMAGEnet，拓普康公司，1988年，日本东京）拍摄的眼前节照片，测量了14例高度近视患者的22只有晶状体眼的偏心情况。这些眼睛接受了IOL植入术，使用Worst-Fechner虹膜爪型晶状体矫正近视。测量了IOL相对于角膜中心和瞳孔中心的偏心情况。
IOL中心相对于角膜中心的平均偏心为0.51±0.25mm（范围为0至0.8374mm）。相对于瞳孔中心测量时，平均偏心为0.47±0.29mm（范围为0.182至0.9341mm）。发现两种测量方法的偏心测量之间存在正相关（p<0.01表示具有统计学意义）。
这种数字成像系统（IMAGEnet）准确测量了近视眼IOL的偏心情况。
