title: Changes in stereoacuity following implantable Collamer lens implantation in patients with myopia.
abstract: 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.
authors.forename: Sudarshan
authors.initials: S
authors.lastname: Khokhar
authors.affiliation: Department of Ophthalmology, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Shikha
authors.initials: S
authors.lastname: Gupta
authors.forename: Varun
authors.initials: V
authors.lastname: Gogia
authors.forename: Ruchir
authors.initials: R
authors.lastname: Tewari
authors.forename: Tushar
authors.initials: T
authors.lastname: Agarwal
mesh_terms: D000293:Adolescent; D000328:Adult; D003867:Depth Perception / Q000502:physiology*; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D008297:Male; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D054120:Phakic Intraocular Lenses; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology*; D055815:Young Adult