Intraocular lens movement caused by ciliary muscle contraction
Intraocular lens movement caused by ciliary muscle contraction
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DOI：
10.1016/s0886-3350(02)01652-8
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发表时间：
2003-04-01
影响因子：
2.8
通讯作者：
Drexler, W
中科院分区：
文献类型：
--
作者：
Findl, O;Kiss, B;Drexler, W
目的：研究人工透镜（IOL）移动，测量为毛果芸香碱诱导的睫状肌收缩引起的前房深度（ACD）变化。奥地利维也纳，维也纳大学眼科学系。方法：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在55例患者的62只人工晶状体眼下毛果芸香碱和环戊醇诱导的睫状肌收缩和舒张中测量ACD。研究了以下内容：2种型号的环形支撑襻IOL（设计用于调节）、平板支撑襻IOL和3种类型的3件式IOL。术后3个月进行测量。环形支撑襻IOL和板状支撑襻IOL显示出向前移动（环形支撑襻43 A，-116 μ m;环形支撑襻43 E，-222 μ m;板状支撑襻-162 μ m）。3件式IOL显示ACD没有变化，除了在1 IOL类型，其中有向后的运动（156妈妈）。结论：毛果芸香碱诱导的睫状肌收缩引起的环和板触觉IOL，导致在估计的屈光度小于0.50屈光度的幅度，在大多数情况下，向前运动。可调节环形支撑襻IOL的性能并不优于传统板状支撑襻IOL。
Purpose: To investigate intraocular lens (IOL) movement, measured as a change in anterior chamber depth (ACD) caused by pilocarpine-induced ciliary muscle contraction.Setting. Department of Ophthalmology, University of Vienna, Vienna, Austria.Methods: 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.Results. The ring-haptic IOLs and plate-haptic IOL showed a forward movement (ring haptic 43A, -116 mum; ring haptic 43E, -222 mum; plate haptic -162 mum). The 3-piece IOLs showed no change in ACD except in 1 IOL type in which there was backward movement (156 mum).Conclusions: 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.