非球面多焦人工晶状体的临床评价及其对发展中国家的意义。

S. Kaushik, Kamlesh
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引用次数: 13

摘要

背景与目的评价新型非球面多焦点人工晶状体(IOL)的临床效果,并与相应的单焦点人工晶状体进行比较。患者与方法采用多焦点和单焦点人工晶体植入术,每组各20例,进行前瞻性研究。对两组患者的远近视力、对比敏感度、聚焦深度和视力质量进行评估。结果85%的多焦病例和100%的单焦病例矫正视力达到6/9及以上。经过距离矫正后,80%的多焦点病例的近视力达到N9级或更好,而10%的单焦点病例的近视力达到N9级或更好。在多焦点组和单焦点组中,近视力N6所需的平均增加值分别为+0.8屈光度(D)和+2.6 D。多焦病例的对比敏感度明显降低,焦深明显增加。结论多焦点人工晶状体是视力要求不严格的患者较好的选择。对比敏感度的下降似乎是获得满意的无辅助近视力的一个可接受的代价。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A clinical evaluation of an aspheric multifocal intraocular lens and its implications for the developing world.
BACKGROUND AND OBJECTIVES To evaluate the clinical performance of a new aspheric multifocal intraocular lens (IOL), and to compare the results with a corresponding monofocal IOL. PATIENTS AND METHODS Two groups of 20 patients each were implanted with a multifocal and monofocal IOL and prospectively studied. Distance and near vision, contrast sensitivity, depth of focus, and quality of vision were assessed in both groups. RESULTS In 85% of multifocal cases and 100% of monofocal cases, the corrected distance vision was 6/9 or better. With distance correction, 80% of multifocal cases had near vision of N9 or better against 10% of monofocal cases. The mean addition required for near vision N6 was +0.8 diopters (D) and +2.6 D in the multifocal and monofocal groups, respectively. Multifocal cases showed significantly decreased contrast sensitivity and increased depth of focus. CONCLUSIONS Multifocal IOLs are a good option for those with nonexacting visual requirements. The loss in contrast sensitivity seems to be an acceptable trade-off for satisfactory unaided near vision.
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