Yu A-Y, Lin Z-D, Chen X-Q, Cai X-Y, Liu Y-Z, Luo S-K
Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China.
Eye (Lond). 2008 Feb;22(2):233-9. doi: 10.1038/sj.eye.6702829. Epub 2007 Apr 13.
To evaluate the position of iris-claw phakic intraocular lens (ICPIOL) in highly myopic eyes by Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM).
Nine eyes of five patients aged 31+/-10 years with average spherical equivalent of -16.04+/-5.46 D (range -7.88 to - 22.88 D) were enrolled in this prospective study and implanted with Verisyse ICPIOLs (AMO). The anterior segment was evaluated by SP and UBM preoperatively and for at least 1 month postoperatively. The statistical significance may be questionable due to the limited number (nine) of eyes.
By SP and UBM, the distance between corneal endothelium and lens (anterior chamber depth) preoperatively was 3.10+/-0.14 and 3.07+/-0.11 mm, respectively; between ICPIOL and corneal endothelium (pseudo-anterior chamber depth), 1.88+/-0.09 and 1.99+/-0.12 mm, respectively; between lens and posterior surface of ICPIOL (IL), 0.76+/-0.13 and 0.67+/-0.06 mm, respectively; between superior optic edge and iris (SOEI), 0.23+/-0.23 and 0.58+/-0.24 mm, respectively; between inferior optic edge and iris (IOEI), 0.07+/-0.13 and 0.41+/-0.22 mm, respectively; between ICPIOL haptics and the angle of anterior chamber (HA), 0.90+/-0.17 and 1.45+/-0.13 mm, respectively. ACD was well correlated between the two methods, but PACD, IL, OEI, HA were not. The postoperative measures, except IL, were significantly different between the two methods.
The differences between measurements by SP and UBM reveal the ICPIOL's position variations with change of body position. Nevertheless, it seems adequate that space is maintained between ICPIOL and corneal endothelium, angle, and crystalline lens. The ICPIOL implanted in phakic eyes seems a safe alternative for treatment of high myopia.
通过Scheimpflug照相术（SP）和超声生物显微镜检查（UBM）评估虹膜夹型有晶状体眼人工晶状体（ICPIOL）在高度近视眼中的位置。
本前瞻性研究纳入了5例年龄为31±10岁的患者的9只眼，平均等效球镜度数为-16.04±5.46 D（范围-7.88至-22.88 D），并植入了Verisyse ICPIOL（AMO）。术前及术后至少1个月通过SP和UBM评估眼前节。由于眼的数量有限（9只），统计学意义可能存在疑问。
通过SP和UBM测量，术前角膜内皮与晶状体之间的距离（前房深度）分别为3.10±0.14和3.07±0.11 mm；ICPIOL与角膜内皮之间的距离（假前房深度）分别为1.88±0.09和1.99±0.12 mm；晶状体与ICPIOL后表面之间的距离（IL）分别为0.76±0.13和0.67±0.06 mm；上光学边缘与虹膜之间的距离（SOEI）分别为0.23±0.23和0.58±0.24 mm；下光学边缘与虹膜之间的距离（IOEI）分别为0.07±0.13和0.41±0.22 mm；ICPIOL襻与前房角之间的距离（HA）分别为0.90±0.17和1.45±0.13 mm。两种方法测量的ACD相关性良好，但PACD、IL、OEI、HA的相关性不佳。除IL外，两种方法术后测量结果存在显著差异。
SP和UBM测量结果的差异揭示了ICPIOL的位置随体位变化而改变。然而，ICPIOL与角膜内皮、房角和晶状体之间保持足够的空间似乎是合适的。植入有晶状体眼中的ICPIOL似乎是治疗高度近视的一种安全选择。
