Khokhar Sudarshan, Gupta Shikha, Gogia Varun, Tewari Ruchir, Agarwal Tushar
Department of Ophthalmology, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
Indian J Ophthalmol. 2015 Oct;63(10):788-90. doi: 10.4103/0301-4738.171510.
The study evaluated the impact of implantable Collamer lens (ICL) implantation on stereoacuity in myopes in a retrospective case series. Ninety-five eyes of 48 patients were recruited. Distance and near stereoacuity were measured using distance Randot stereotest and TNO test, respectively, before surgery and at 4 weeks postoperatively. Mean age of the patients was 23.67 ± 3.7 years. Mean uncorrected distance visual acuity (UDVA) was 1.28 ± 0.37 logarithm of the minimum angle of resolution (logMAR) (median: 1.3; range: 0.3-1.8), and median best-corrected distance visual acuity (BDVA) was 0.18 logMAR (range: 0-0.6). There was a significant improvement in both UDVA and BDVA postsurgery (P < 0.001; Wilcoxon signed rank test). The overall improvement in stereopsis was observed in 15/48 (31.25%) and 13/48 (27.10%) subjects for near and distance, respectively, with no significant difference between the two (P = 0.82; Fisher's exact test). Among stereoblind individuals, the odd's ratio for near stereoacuity to improve in comparison to distance stereoacuity was 8.85 (95% confidence interval: 1.68-46.70; P = 0.01). ICL implantation for refractive correction aided stereoacuity improvement in myopes more so for near.
本回顾性病例系列研究评估了植入式可折叠人工晶体（ICL）植入术对近视患者立体视锐度的影响。共纳入48例患者的95只眼。分别在手术前及术后4周，使用远距离兰多立体视觉测试和TNO测试测量远距离和近距离立体视锐度。患者的平均年龄为23.67±3.7岁。平均未矫正远距离视力（UDVA）为1.28±0.37最小分辨角对数（logMAR）（中位数：1.3；范围：0.3 - 1.8），最佳矫正远距离视力（BDVA）中位数为0.18 logMAR（范围：0 - 0.6）。术后UDVA和BDVA均有显著改善（P < 0.001；Wilcoxon符号秩检验）。分别有15/48（31.25%）和13/48（27.10%）的受试者在近距离和远距离立体视方面有总体改善，两者之间无显著差异（P = 0.82；Fisher精确检验）。在立体盲个体中，近距离立体视锐度改善相对于远距离立体视锐度的优势比为8.85（95%置信区间：1.68 - 46.70；P = 0.01）。ICL植入用于屈光矫正有助于近视患者立体视锐度的改善，尤其是在近距离方面。
