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. 2021 Nov 16;21(1):397.
doi: 10.1186/s12886-021-02163-3.

3-month surgical outcomes of Implantable Collamer Lens implantation for myopic regression after laser vision correction surgeries: a retrospective case series

Byunghoon Chung #  1 , Joon Hyun Kim #  2 , David S Y Kang  1 , Dong Jun Kang  2 , Eung Kweon Kim  3 , Kyoung Yul Seo  3 , Ikhyun Jun  3 , Tae-Im Kim  4
Affiliations

3-month surgical outcomes of Implantable Collamer Lens implantation for myopic regression after laser vision correction surgeries: a retrospective case series

Byunghoon Chung et al. BMC Ophthalmol. .

Abstract

Background: To investigate the surgical outcomes of implantable collamer lens (ICL) implantation in eyes with residual myopia after primary laser vision correction (LVC) surgeries.

Methods: This study included patients who underwent ICL implantation and had a history of LVC surgery, including photorefractive keratectomy (PRK) or laser-assisted in situ keratomileusis (LASIK). Visual acuity and refractive error were assessed pre and 3-months postoperatively and the efficacy and safety indices calculated accordingly.

Results: A total of 30 eyes of 17 patients were included in this study. At 3 months, the mean logMAR uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and spherical equivalent were - 0.03 ± 0.11 (include logMAR), - 0.04 ± 0.09 (include logMAR), and - 0.06 ± 0.33 diopters (D), respectively. The 3-month Snellen UDVA was better than 20/20 for 83% of eyes, and 97% of eyes showed an unchanged or improved CDVA after surgery. The mean efficacy and safety indices were 1.11 ± 0.22 and 1.13 ± 0.20, respectively. Further, 93 and 100% of eyes were within ±0.5 and ± 1.0 D of the attempted spherical equivalent refraction, respectively.

Conclusions: ICL implantation in eyes with myopic regression after previous LVC surgery showed safe, effective, and predictable outcomes.

Trial registration: retrospectively registered.

Keywords: Implantable collamer lens; Laser-assisted in situ keratomileusis; Myopic regression; Photorefractive keratectomy.

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Conflict of interest statement

Dr. Kang is a consultant for Avedro Inc., Schwind eye-tech-solutions, and Carl Zeiss Meditec AG. The remaining authors have no proprietary or financial interest in the materials presented herein.

Figures

Fig. 1
Fig. 1
Visual and refractive outcomes after implantable collamer lens implantation (ICL) in eyes with myopic regression after primary laser vision correction surgery. A Cumulative 3-month postoperative uncorrected distance visual acuity (UDVA) and preoperative corrected distance visual acuity (CDVA). B Changes in Snellen lines of postoperative CDVA relative to the preoperative CDVA. C The attempted versus achieved changes in spherical equivalent refraction (SEQ) 3 months after ICL implantation. D Accuracy of SEQ relative to the intended target. E Preoperative and postoperative refractive astigmatism. D = diopters
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