Ohashi Tsutomu, Fujiya Akio, Yoshida Maiko, Kojima Takashi
Ohashi Eye Center, Sapporo, Japan.
Nagoya Eye Clinic, Nagoya, Japan.
Clin Ophthalmol. 2025 Jul 16;19:2325-2332. doi: 10.2147/OPTH.S527617. eCollection 2025.
To evaluate stereopsis at various distances after bilateral implantation of multifocal and monofocal intraocular lenses (IOLs).
This study included 173 patients who underwent cataract surgery, with 70 receiving bilateral multifocal and 103 receiving bilateral monofocal IOLs. Stereoacuity was assessed without correction in the multifocal group and with correction in the monofocal group at far, intermediate, and near distances. Age-matched comparisons were conducted as the mean age was low in the multifocal group. Stereoacuity was assessed at 0.3, 0.5, 0.7, 3, and 5 m using a Binoptometer 4P.
Stereoacuity was significantly better in the multifocal group than in the monofocal group at all distances (p < 0.05), except at 0.3 and 5 m after age matching. The proportion of patients achieving 100 arcsec or better was significantly higher in the multifocal group than in the multifocal group at all distances except 0.3 m (p < 0.05). Additionally, significant differences were noted only at 0.7 m after age matching (p < 0.05). The proportions of patients unable to identify 600 arcsec in the multifocal, monofocal, and age-matched monofocal groups were 3%, 11%, and 11% at 0.3 m; 0%, 9%, and 14% at 0.5 m; 0%, 9%, and 8% at 0.7 m; 0%, 5%, and 3% at 3 m; and 0%, 6%, and 6% at 5 m, respectively. After age matching, poor stereopsis was significantly reduced in the multifocal group at 0.5 m (p < 0.05) but not at 0.7 m.
Patients with bilateral implanted multifocal IOLs exhibited superior stereopsis across various distances than those with bilateral monofocal IOLs. Additionally, fewer patients with multifocal IOLs experienced poor stereopsis. These results suggest that multifocal IOLs may help patients in maintaining stereopsis by facilitating focus on multiple points from far to near distances daily.
评估双侧植入多焦点和单焦点人工晶状体（IOL）后不同距离的立体视。
本研究纳入173例行白内障手术的患者，其中70例接受双侧多焦点IOL植入，103例接受双侧单焦点IOL植入。多焦点组在未矫正状态下评估远、中、近距离的立体视锐度，单焦点组在矫正状态下评估。由于多焦点组平均年龄较低，进行了年龄匹配比较。使用Binoptometer 4P在0.3、0.5、0.7、3和5米处评估立体视锐度。
除年龄匹配后0.3米和5米处外，多焦点组在所有距离的立体视锐度均显著优于单焦点组（p < 0.05）。在所有距离（0.3米除外），多焦点组达到或优于100角秒的患者比例显著高于单焦点组（p < 0.05）。此外，年龄匹配后仅在0.7米处有显著差异（p < 0.05）。多焦点组、单焦点组和年龄匹配单焦点组在0.3米处无法识别600角秒的患者比例分别为3%、11%和11%；在0.5米处分别为0%、9%和14%；在0.7米处分别为0%、9%和8%；在3米处分别为0%、5%和3%；在5米处分别为0%、6%和6%。年龄匹配后，多焦点组在0.5米处的立体视不良显著减少（p < 0.05），但在0.7米处未减少。
双侧植入多焦点IOL的患者在不同距离的立体视均优于双侧植入单焦点IOL的患者。此外，多焦点IOL患者中出现立体视不良的人数较少。这些结果表明，多焦点IOL可能通过帮助患者日常从远到近聚焦于多个点来维持立体视。
