Schmidinger Gerald, Simader Christian, Dejaco-Ruhswurm Irene, Skorpik Christian, Pieh Stefan
Department of Ophthalmology, Medical University of Vienna, Vienna, Austria.
J Cataract Refract Surg. 2005 Nov;31(11):2076-83. doi: 10.1016/j.jcrs.2005.04.037.
To evaluate the image quality of asymmetric Acri. Twin bifocal intraocular lenses (IOLs) (Acri.Tec) by comparing distance and near black-white contrast sensitivity function with that of the Pharmacia 811E IOL.
Department of Ophthalmology, Medical University of Vienna, Vienna, Austria.
Thirty-two eyes of 16 patients were examined after contralateral implantation of 1 Acri. Twin near-weighted 733D IOL and 1 Acri. Twin distance-weighted 737D IOL. Twenty eyes in 10 patients were examined after binocular Pharmacia 811E IOL implantation. Best corrected distance and near visual acuities were determined. Individual reading distance was recorded and corrected to 40 cm for the near contrast test (Holladay Contrast Acuity Test). Distance contrast sensitivity function was evaluated using the Acuity Max (Science 2020) computer program.
Best corrected distance visual acuity was significantly better in patients with the 737D IOL than in those with the 733D or 811E IOLs. For distance reading with best distance correction, the 733D IOL performed better than the 737D and the 811E. Individual reading distance with the Acri. Twin IOL and 811E IOL was 33.6 cm and 34.0 cm, respectively. Best distance-corrected near contrast sensitivity function was better in eyes with the near-weighted 733D IOL. Binocular testing showed a significant difference between the 2 groups only at low-contrast values. At distance, contrast sensitivity function was better with the 737D IOL, whereas no difference was found between the 733D and the 811E IOLs. Binocular contrast sensitivity function at distance revealed statistically significantly better results in the Acri. Twin group.
An asymmetric diffractive bifocal lens system was advantageous in terms of vision quality when implanted binocularly and superior to monocular stronger weighted focus compared with conventional bifocal IOLs.
通过比较非对称Acri.Twin双焦点人工晶状体（IOL）（Acri.Tec）与法玛西亚811E IOL的远、近黑白对比敏感度函数，评估其图像质量。
奥地利维也纳医科大学眼科。
16例患者的32只眼在对侧植入1枚Acri.Twin近焦点加权733D IOL和1枚Acri.Twin远焦点加权737D IOL后接受检查。10例患者的20只眼在双眼植入法玛西亚811E IOL后接受检查。测定最佳矫正远、近视力。记录个体阅读距离并校正至40 cm用于近对比测试（霍拉迪对比视力测试）。使用Acuity Max（Science 2020）计算机程序评估远对比敏感度函数。
737D IOL患者的最佳矫正远视力显著优于733D或811E IOL患者。对于最佳远矫正下的远距离阅读，733D IOL的表现优于737D和811E。Acri.Twin IOL和811E IOL的个体阅读距离分别为33.6 cm和34.0 cm。近焦点加权733D IOL眼的最佳远矫正近对比敏感度函数更好。双眼测试显示两组仅在低对比度值时有显著差异。在远距离时，737D IOL的对比敏感度函数更好，而733D和811E IOL之间未发现差异。远距离双眼对比敏感度函数在Acri.Twin组显示出统计学上显著更好的结果。
非对称衍射双焦点晶状体系统双眼植入时在视觉质量方面具有优势，与传统双焦点IOL相比，优于单眼更强加权焦点。
