Evaluation of changes in choroidal thickness after surgical implantation of collamer lens in patients with different degrees of high myopia

He,Fanglin; Yang,Jie; Jia,Renbing; Zhang,Jing

doi:10.3892/etm.2019.7831

Evaluation of changes in choroidal thickness after surgical implantation of collamer lens in patients with different degrees of high myopia

Authors:
- Fanglin He
- Jie Yang
- Renbing Jia
- Jing Zhang
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Affiliations: Department of Ophthalmology, Shanghai Key Laboratory of Orbital Disease and Ocular Oncology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
Published online on: July 30, 2019 https://doi.org/10.3892/etm.2019.7831
Pages: 2599-2607
Copyright: © He et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the present study was to investigate the potential changes in the choroidal thickness (CT) after surgical implantation of collamer lens (ICL) and to determine whether the variations in CT were associated with the degree of myopia. In the study, 98 eyes from 98 myopia patients were divided into two groups according to the degree of myopia: High myopia and super‑high myopia. All eyes were measured using the swept‑source optical coherence tomography (SS‑OCT) technique. CT and CT variations were also recorded. The foveal CT increased significantly in high‑myopia patients at 2 h after surgery and 3 months after surgery; the same tendency was observed in the inner nasal CT and outer nasal CT at the same time‑points. In patients with super‑high myopia, the subfoveal CT increased significantly at 2 h and 3 months after surgery compared with the pre‑operative values. No statistically significant differences were obtained in any of the nine different choroidal regions evaluated at post‑operative week 1 and post‑operative month one. Furthermore, the increase in the subfoveal CT in the super‑myopia group was significantly higher than that in the high‑myopia group at 2 h and at 3 months after ICL. The results of the present study indicated that the CT significantly increased 2 h after the surgery and then reached a peak at 3 months, particularly in the subfoveal and nasal areas. A higher degree of myopia was associated with greater subfoveal choroidal changes.

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