Drews R C, Kreiner C
J Cataract Refract Surg. 1987 Sep;13(5):525-30. doi: 10.1016/s0886-3350(87)80106-2.
The elasticity and memory of intraocular lens loops was tested by manufacturing lenses with matching physical properties but with loops of either polypropylene or VS-100 polymethylmethacrylate (PMMA). After establishing the reliability of measurements, these lenses were compressed under physiologic conditions for up to three years. The rates and extent of reexpansion of the loops were then measured. Given loops of equivalent initial flexibility, VS-100 PMMA has less long-term tendency to reexpand to its initial shape than polypropylene.
通过制造具有匹配物理特性但襻分别为聚丙烯或VS - 100聚甲基丙烯酸甲酯（PMMA）的人工晶状体，对人工晶状体襻的弹性和记忆性进行了测试。在确定测量的可靠性后，将这些晶状体在生理条件下压缩长达三年。然后测量襻的再扩张速率和程度。在襻具有同等初始柔韧性的情况下，VS - 100 PMMA相比于聚丙烯，其长期再扩张至初始形状的趋势较小。
