Evaluation of biometric indicators of anterior segment parameters after ICL implantation by swept-source optical coherence tomography

BMC Ophthalmology

Research

Yilin Liu¹  Chuhao Tang¹  Zhengze Sun¹  Tong Sun¹  Hong Qi¹  Hongyu Duan¹  Linbo Bian¹  Wenlong Li¹  Lu Zhao¹ 

[1] Department of Ophthalmology, Peking University Third Hospital, Beijing Key 9 Laboratory of Restoration of Damaged Ocular Nerve, Beijing, China;

关键词: Implantable collamer lens implantation surgery;    Myopia;    Optical coherence tomography;    Vault;    Iridotrabecular contact;   

DOI  :  10.1186/s12886-023-02942-0

 received in 2023-01-01, accepted in 2023-04-25,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundTo evaluate anterior segment structural alterations after implantable collamer lens (ICL) implantation in myopic patients using swept-source quantitative optical coherence tomography (SS-OCT).MethodsThis prospective study included 47 eyes in 24 patients with preoperative spherical equivalent ≥ -3.00 D. Patients underwent ICL implantation at Department of Ophthalmology, Peking University Third Hospital, from May 2021 to December 2022. SS-OCT was used to measure anterior chamber width (ACW), angle opening distance (AOD), angle recess area (ARA), trabecular-iris area (TISA), trabecular-iris angle (TIA), iridotrabecular contact (ITC) area, and ITC Index before ICL implantation surgery and at 1 month follow-up. The correlations among the ITC index, vault, and angle parameters were analysed. Receiver operating characteristic (ROC) analysis was used to explore the ability of the vault to identify eyes with suspected angle-closure.ResultsAt one month following ICL implantation, the ITC area was 0.396 ± 0.37 mm2, and the ITC index is 8.143 ± 5.439%. All angle parameters, except ACW, showed a statistically significant reduction on SS-OCT (P < 0.05). Mean AOD500, AOD750, ARA500, ARA750, TISA500, TISA750, TIA500, and TIA750 values at one month postoperatively decreased by 60.0%, 60.4%, 58.1%, 59.2%, 57.3%, 58.7%, 48.8%, and 50.7%, respectively. The vault was positively correlated with the ITC index and percent change in anterior chamber angle parameters. A vault of > 0.659 mm was found to be optimal for angle-closure suspect with a sensitivity of 85.2% and a specificity of 53.9%.ConclusionsAnterior chamber angle parameters decreased one month after ICL implantation, and their percentage changes and ITC index correlated with the vault. When the vault is larger than 0.659 mm, it is necessary to be alert to possible closed angle suspicion.

【 授权许可】

CC BY   
© The Author(s) 2023

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Fig. 5