Short-term Clinical Outcomes of Small Incision Lenticule Extraction for Correction of Myopia Patients with Corneal Opacity

Buki Kim; Sujoung Mun; Jisun Kim; Younghoon Yang; Junhyung Moon; Youngtaek Chung

doi:10.3341/jkos.2019.60.8.719

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Kim, Mun, Kim, Yang, Moon, and Chung: Short-term Clinical Outcomes of Small Incision Lenticule Extraction for Correction of Myopia Patients with Corneal Opacity

Original Article

Journal of the Korean Ophthalmological Society 2019; 60(8): 719-724.

Published online: 20 August 2019

DOI: https://doi.org/10.3341/jkos.2019.60.8.719

Short-term Clinical Outcomes of Small Incision Lenticule Extraction for Correction of Myopia Patients with Corneal Opacity

Buki Kim, MD, Sujoung Mun, MD, PhD, Jisun Kim, MD, Younghoon Yang, MD, Junhyung Moon, MD, Youngtaek Chung, MD, PhD

Onnuri Smile Eye Clinic, Seoul, Korea.

Address reprint requests to Youngtaek Chung, MD, PhD. Onnuri Smile Eye Clinic, 9F Hyobong Building, #1 Gangnam-daero 65gil, Seocho-gu, Seoul 06614, Korea. Tel: 82-2-6913-0000, Fax: 82-2-532-5406, ytchungc@daum.net

Received 21 March 2019 Revised 29 March 2019 Accepted 18 July 2019

The Korean Ophthalmological Society

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

To evaluate the clinical outcomes of small incision lenticule extraction (SMILE) for the treatment of myopia with corneal opacity.

Methods

Thirteen eyes of 13 patients with corneal opacities who underwent SMILE were retrospectively studied. Uncorrected distance visual acuity, spherical equivalence, efficacy index, and safety index were noted at 3 months after the procedure. The density and area of the corneal opacities were measured and compared preoperatively and 3 months postoperatively.

Results

All eyes had preoperative corneal opacities within the lenticule formation areas. The mean area and density of corneal opacities were 0.72 ± 0.33 mm² and 52.46 ± 15.74, respectively. All procedures were uneventful and no intraoperative complications were observed. At 3 months after the procedure, the efficacy and safety indices were 1.01 ± 0.15, and 1.05 ± 0.10, respectively, and the mean densities and areas of corneal opacities were 46.85 ± 14.56 (p = 0.038) and 0.70 ± 0.36 mm² (p = 0.776), respectively.

Conclusions

The SMILE procedure was effective and safe for the correction of myopic patients with corneal opacities.

Keywords: Corneal opacity, Small incision lenticule extraction

Figures and Tables

Figure 1

Anterior segment photos of case No. 2, 3, 4, 5, 6, 7, 9, 10, 12. The corneal opacity of all eyes was within the lenticule formation area.

Figure 2

The preoperative, intraoperative, and postoperative corneal examinations in case No. 1. (A) The preoperative corneal opacity was noted by slit-lamp microscopy. (B) Corneal opacity was noted during lenticule scanning (red arrow). (C) The lenticule was separated successfully. (D) The preoperative anterior segment optical coherence tomography (AS-OCT) image. Thickening of epithelium and hyper-reflectivity of anterior stroma at corneal opacity lesion was noted. (E) The postoperative AS-OCT image. Thinning of the opacity lesion was noted.

Table 1

Patient demographics

CDVA = corrected distance visual acuity; M = male; F = female.

Table 2

The preoperative and postoperative mean density and mean area of corneal opacity

Values are presented as mean ± standard deviation.

^*Paired t-test.

Notes

^{Conflicts of Interest} The authors have no conflicts to disclose.

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