Hwang I P, Clinch T E, Moshifar M, Malmquist L, Cason M, Crandall A S
Department of Ophthalmology, John A. Moran Eye Center, Salt Lake City, Utah 84132, USA.
J Cataract Refract Surg. 1998 Nov;24(11):1505-8. doi: 10.1016/s0886-3350(98)80174-0.
To compare the incidence of decentration with 2 types of silicone intraocular lenses (IOLs).
John A. Moran Eye Center, University of Utah Medical Center, Salt Lake City, Utah, USA.
Selection criteria for this retrospective study included patients who had uncomplicated cataract surgery with a clear cornea or scleral tunnel incision with a curvilinear capsulorhexis and capsular bag implantation of a silicone IOL. After a mean follow-up of 14 months (range 12 to 18 months), 54 eyes implanted with a 3-piece lens (AMO SI-30) and 58 eyes implanted with a plate-haptic lens (Staar AA403) were examined for posterior chamber IOL decentration. The decentration criterion was 0.5 mm or more from the center of the pupil. Detailed chart review of preoperative and postoperative measurements was performed for each patient.
Eighteen of the 3-piece IOLs (33%) and 11 of the plate-haptic IOLs (20%) were decentered 0.5 mm or more (P = .129). Using photographic analysis, the mean IOL decentration with the 3-piece IOL (1.12 mm +/- 0.198 [SD]) was significantly greater than with the plate-haptic IOL (0.632 +/- 0.278 mm)(P < .001). No statistically significant correlation was found between the centered or decentered IOL groups' preoperative refraction, axial length, capsulorhexis size, type of incision, or rate of neodymium:YAG laser capsulotomy.
No statistically significant difference was seen between the decentration rates of 3-piece and plate-hepatic IOLs; however, the amount of decentration with the 3-piece IOL was significantly greater than with the plate-hepatic IOL. Other factors did not contribute to IOL decentration.
比较两种类型的硅酮人工晶状体（IOL）的偏心发生率。
美国犹他州盐湖城犹他大学医学中心约翰·A·莫兰眼科中心。
这项回顾性研究的选择标准包括接受了无并发症白内障手术的患者，手术采用透明角膜或巩膜隧道切口、曲线形撕囊术，并在囊袋内植入硅酮IOL。平均随访14个月（范围12至18个月）后，检查了54只植入三片式人工晶状体（AMO SI-30）的眼和58只植入板襻式人工晶状体（Staar AA403）的眼的后房型人工晶状体偏心情况。偏心标准为偏离瞳孔中心0.5毫米或更多。对每位患者进行术前和术后测量的详细图表回顾。
18只三片式人工晶状体（33%）和11只板襻式人工晶状体（20%）偏心0.5毫米或更多（P = 0.129）。使用摄影分析，三片式人工晶状体的平均人工晶状体偏心度（1.12毫米±0.198[标准差]）显著大于板襻式人工晶状体（0.632±0.278毫米）（P < 0.001）。在人工晶状体居中或偏心组的术前屈光、眼轴长度、撕囊大小、切口类型或钕:钇铝石榴石激光晶状体后囊切开率之间未发现统计学上的显著相关性。
三片式和板襻式人工晶状体的偏心率之间未观察到统计学上的显著差异；然而，三片式人工晶状体的偏心量显著大于板襻式人工晶状体。其他因素对人工晶状体偏心无影响。
