Effect of long-term rotation on astigmatism following EVO-toric intraocular collamer lens implantation

• DOI: 10.3389/fmed.2023.1194006
• Publication Date: 2023-07-14T21:31:20Z
• Authors: Xun Chen; Huamao Miao; Mingrui Cheng; I-Chun Lin; Boliang Li; Yinjie Jiang; Yadi Lei; Xiaoying Wang; Xingtao Zhou
• Keywords: Astigmatism; Phakic intraocular lens

Objective To evaluate the effect of long-term rotation on astigmatism following Evolution-toric intraocular collamer lens (EVO-TICL) implantation. Methods Forty eyes 22 patients were enrolled in this prospective study. Visual acuity, refractive parameters, and axial position EVO-TICL by OPD-Scan III aberrometer measured preoperatively, 1 month 3 years postoperatively. Results Last visit, safety index was 1.32 ± 0.15 efficacy 1.01 0.23. The best-fitting curve attempted versus achieved correction y = 0.9751x + 0.001. mean spherical equivalent (SE) decreased from −8.94 2.72D preoperatively to 0.06 0.24D − 0.36 0.46D postoperatively, respectively. target surgical induced 1.55 0.61D 1.67 0.94D average expected axis TICL was-1.15 9.07 (−21–19°). One actual −0.70 9.86 (−20–20°) 0.35 11.72 (−25–30°), absolute 3.70 4.42 (0–22°) 6.00 6.70 (0–32°) respectively ( p < 0.001). −0.10 0.12D, −0.21 0.30D 0.44 0.45D without postoperative 3.73 2.69 (0–9°) 1.66 (0–5°) for low (<2D) high (≥2D) astigmatic TICL, 0.05). Conclusion implantation is safe effective, with good predictability stability. a fast device detect mydriasis, relatively stable long term A slight low-astigmatic may not cause astigmatism, whereas high-astigmatic it.