Implantation of Implantable Collamer Lenses After Radial Keratotomy

To assess the predictability, efficacy, and safety of posterior chamber phakic implantable collamer lens (ICL) implantation after radial keratotomy.In a retrospective non-comparative interventional case series, outcomes in 6 consecutive eyes of 4 patients with residual refraction after radial keratotomy were analyzed after the implantation of ICLs. All of the lenses were implanted to correct the residual refractive error, ranging from -12.00 to +3.50 diopters (D) for sphere and from -0.75 to -3.75 D for cylinder.The mean uncorrected distance visual acuity after ICL implantation was 0.31 ± 0.36 logMAR and the corrected distance visual acuity was 0.12 ± 0.10 logMAR. The mean efficacy index was 0.86. No eyes lost lines of visual acuity, two eyes did not change after surgery, two eyes gained one line, and two eyes gained two lines. The mean safety index was 1.17. No intraoperative complications were found and ICL explantation or repositioning was not required during the follow-up. No cases of cataract, pigment dispersion glaucoma, pupillary block, or other vision-threatening complications were found.ICL implantation may be considered a reasonable surgical procedure for correcting residual refractive errors after radial keratotomy. [J Refract Surg. 2017;33(6):395-398.].