Vilaseca Meritxell, Arjona Montserrat, Pujol Jaume, Issolio Luis, Güell José L
Center for Sensors, Instruments and Systems Development, Universitat Politècnica de Catalunya, Terrassa, Argentina.
J Cataract Refract Surg. 2009 Aug;35(8):1415-23. doi: 10.1016/j.jcrs.2009.03.022.
To use the double-pass technique to evaluate the in vitro optical quality of foldable monofocal intraocular lenses (IOLs) used to correct aphakia.
Universitat Politècnica de Catalunya, Terrassa, and Instituto de Microcirugía Ocular de Barcelona, Barcelona, Spain; Universidad Nacional de Tucumán, Tucumán, Argentina.
This study assessed the in vitro optical quality of 7 IOLs before and after injection in an artificial eye that was attached to a double-pass system (Optical Quality Analysis System [OQAS]). The procedure imitated the conventional in vivo technique used to assess the optical quality of eyes with an IOL. The following parameters were evaluated: point-spread function, modulation transfer function (MTF), MTF cutoff frequency, Strehl ratio, and OQAS values.
The in vitro optical quality of most IOLs was as good after injection as before injection. In 1 IOL, the post-injection optical quality was statistically significantly different but the optical quality remained high.
Results indicate that after an IOL is placed in the eye, its optical performance will be good, providing good visual quality. The eye cell model attached to the double-pass system was useful and effective for fully characterizing the optical quality of IOLs and evaluating variations resulting from the injection process.
采用双程技术评估用于矫正无晶状体眼的可折叠单焦点人工晶状体（IOL）的体外光学质量。
西班牙巴塞罗那特拉萨斯的加泰罗尼亚理工大学以及巴塞罗那眼显微外科研究所；阿根廷图库曼的图库曼国立大学。
本研究在连接双程系统（光学质量分析系统[OQAS]）的人工眼中，评估了7枚IOL注入前后的体外光学质量。该程序模仿了用于评估植入IOL的眼睛光学质量的传统体内技术。评估了以下参数：点扩散函数、调制传递函数（MTF）、MTF截止频率、斯特列尔比率和OQAS值。
大多数IOL注入后的体外光学质量与注入前一样好。在1枚IOL中，注入后的光学质量在统计学上有显著差异，但光学质量仍然很高。
结果表明，IOL植入眼内后，其光学性能良好，可提供良好的视觉质量。连接双程系统的眼细胞模型对于全面表征IOL的光学质量以及评估注射过程导致的变化是有用且有效的。
