Changes in stereoacuity following implantable Collamer lens implantation in patients with myopia

• Published in: Indian journal of ophthalmology 2015-10, Vol.63 (10), p.788-790
• Main Authors: Khokhar, Sudarshan, Gupta, Shikha, Gogia, Varun, Tewari, Ruchir, Agarwal, Tushar
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Brief Communications; Care and treatment; Depth Perception - physiology; Female; Humans; Implantable Collamer lens; Lens Implantation, Intraocular; Male; myopia; Myopia - physiopathology; Myopia - surgery; Patient outcomes; Phakic Intraocular Lenses; Prostheses and implants; Retrospective Studies; stereoacuity; stereoblind; Stereoscopic vision; Visual Acuity - physiology; Young Adult
• ISSN: 0301-4738; 1998-3689
• 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.