Findl Oliver, Kiss Barbara, Petternel Vanessa, Menapace Rupert, Georgopoulos Michael, Rainer Georg, Drexler Wolfgang
Department of Ophthalmology, University of Vienna, Austria.
J Cataract Refract Surg. 2003 Apr;29(4):669-76. doi: 10.1016/s0886-3350(02)01652-8.
To investigate intraocular lens (IOL) movement, measured as a change in anterior chamber depth (ACD) caused by pilocarpine-induced ciliary muscle contraction.
Department of Ophthalmology, University of Vienna, Vienna, Austria.
In this prospective study, the ACD was measured using high-precision, high-resolution, dual-beam partial coherence interferometry in 62 pseudophakic eyes of 55 patients under pilocarpine- and cyclopentolate-induced ciliary muscle contraction and relaxation. The following were studied: 2 models of a ring-haptic IOL (designed to accommodate), a plate-haptic IOL, and 3 types of 3-piece IOLs. Measurements were performed 3 months after surgery.
The ring-haptic IOLs and plate-haptic IOL showed a forward movement (ring haptic 43A, -116 microm; ring haptic 43E, -222 microm; plate haptic -162 microm). The 3-piece IOLs showed no change in ACD except in 1 IOL type in which there was backward movement (156 microm).
Pilocarpine-induced ciliary muscle contraction caused forward movement of ring- and plate-haptic IOLs that resulted in an estimated accommodative amplitude of less than 0.50 diopter in most cases. The accommodating ring-haptic IOLs did not perform better than the conventional plate-haptic IOL.
研究毛果芸香碱诱导睫状肌收缩引起的前房深度（ACD）变化所测量的人工晶状体（IOL）运动。
奥地利维也纳大学眼科。
在这项前瞻性研究中，使用高精度、高分辨率双光束部分相干干涉测量法，对55例患者的62只人工晶状体眼在毛果芸香碱和环喷托酯诱导的睫状肌收缩和松弛状态下进行ACD测量。研究了以下几种人工晶状体：2种环形襻人工晶状体模型（设计用于调节）、1种平板襻人工晶状体和3种三片式人工晶状体。测量在术后3个月进行。
环形襻人工晶状体和平板襻人工晶状体出现向前运动（环形襻43A，-116微米；环形襻43E，-222微米；平板襻-162微米）。除1种三片式人工晶状体出现向后运动（156微米）外，其余三片式人工晶状体的ACD无变化。
毛果芸香碱诱导的睫状肌收缩导致环形襻和平板襻人工晶状体向前运动，在大多数情况下，这导致估计的调节幅度小于0.50屈光度。可调节环形襻人工晶状体的表现并不优于传统平板襻人工晶状体。
