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Objective evaluation of vision quality in pseudophakic patients with posterior capsular opacification using double-pass retinal imaging

机译：双通视网膜成像对囊型透露术后透视患者视力质量的客观评价

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ABSTRACT Purpose: The purpose of this study was to objectively assess the optical vision quality of patients before and after Nd:YAG capsulotomy for posterior capsular opacification using a double-pass retinal imaging system. Methods: We retrospectively analyzed the data from 26 pseudophakic eyes with posterior capsular opacification that underwent Nd:YAG capsulotomy. The objective scatter indices, modulation transfer function cutoff frequencies, Strehl ratios, and logMAR corrected distance visual acuities were assessed before and after YAG capsulotomy with a double-pass retinal imaging system (OQAS II, Visiometrics, Spain). We also analyzed data from a subgroup of 10 patients with pre-YAG corrected distance visual acuity of 0.10 logMAR (20/25) or better. Results: Vision quality indices improved in all 26 eyes, resulting in a statistically significant improvement in the corrected distance visual acuity (p=0.007), objective scatter index (p=0.001), modulation transfer function cutoff frequency (p=0.001), and Strehl ratio (p=0.020). The overall mean improvements included 0.12 ± 0.04 logMAR for corrected distance visual acuity, 2.84 ± 0.76 for objective scatter index, 12.29 ± 2.77 for modulation transfer function cutoff frequency, and 0.06 ± 0.03 for Strehl ratio. Our sub-analysis of 10 eyes with 0.10 logMAR (20/25) corrected distance visual acuity or better also showed a statistically significant improvement in the mean objective scatter index (0.76 ± 16; p=0.001), resulting in approximately 35% decrease in intraocular light scatter. Conclusions: The objective vision quality measurements as assessed by the double-pass retinal imaging system showed a significant improvement after YAG capsulotomy. This suggests that the objective scatter index improves after YAG capsulotomy, even in eyes with pre-YAG 0.10 logMAR (Snellen 20/25) corrected distance visual acuity or better.
机译：摘要目的：本研究的目的是客观地评估ND之前和之后的患者的光视性视觉质量：YAG涂布术，用于使用双通视网膜成像系统的后囊渗透。方法：我们回顾性地分析了26个假囊眼镜的数据，然后探讨了ND：YAG胶囊术。在YAG胶囊术前后评估目标散射指数，调制传递函数截止频率，刻度比和Logmar校正距离视觉缩进，双通视网膜切开术（OQAS II，胶质仪，西班牙）。我们还分析了10名患者的亚组的数据，该患者预折叠距离视力为0.10 logmar（20/25）或更好。结果：视觉质量指数在所有26只眼中改善，导致矫正距离视力的统计显着改善（P = 0.007），目标散射指数（P = 0.001），调制传递函数截止频率（P = 0.001），和斯特勒比比（P = 0.020）。总体平均改善包括0.12±0.04 Logmar，用于校正距离视力为2.84±0.76，用于客观散射指数为12.29±2.77，用于调制传递函数截止频率，0.06±0.03，施力比率为0.06±0.03。我们的10只眼睛的子分析用0.10 logmar（20/25）矫正距离视力或更好地也显示出平均物镜散射指数（0.76±16; p = 0.001）的统计上显着改善，导致约35％的减少眼内光散射。结论：双通视网膜成像系统评估的客观视觉质量测量显示薄纱胶囊术后显着改善。这表明客观散射指数在YAG胶囊术后改善，即使在Pre-YAG 0.10 Logmar（Snellen 20/25）校正视力或更好的眼睛中也会改善。

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