Jongsoo Lee1,2, Younghee Kim3, Saekwang Park3, Jungae Bae3, Seunguk Lee4, Youngmin Park1,2, Jonghun Lee1, Ji-Eun Lee1,2. 1. The Department of Ophthalmology, School of Medicine, Pusan National University, Pusan, Korea. 2. Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea. 3. BalGunNun Eye Clinic, Pusan, Korea. 4. The Department of Ophthalmology, School of Medicine, Kosin University, Pusan, Korea.
Abstract
BACKGROUND: The aim of this study was to determine whether implantable collamer lens (ICL) implantation to correct myopia is an effective and safe surgical option even after long-term follow up. DESIGN: A retrospective observational study was carried out. PARTICIPANTS: A total of 281 eyes of 145 myopic patients were included in the study. METHODS: Patients underwent ICL implantation and had the follow-up period of at least 5 years (87 ± 18.9 months). MAIN OUTCOME MEASURES: Outcome measures included uncorrected and corrected distance visual acuities, refraction for the evaluation of efficacy, safety, stability and predictability, ICL vault and adverse events. RESULTS: The final mean logMAR uncorrected and corrected distance visual acuities were 0.02 ± 0.19 and -0.12 ± 0.13, respectively. The mean efficacy and safety indices were 1.04 ± 0.32 and 1.20 ± 0.26. The mean spherical equivalent decreased from -8.74 ± 2.27 diopter (D) to -0.58 ± 0.72 D, and there was high predictability with 69.8% and 87.2% having a postoperative refraction within 0.5 D and 1.0 D, respectively. The mean postoperative vault was changed from 2.53 ± 0.6 to 2.00 ± 0.7. Six (2.1%) eyes developed cataract, and the mean endothelial cell loss was 7.8 ± 8.3%. Increased intraocular pressure was found in two (0.7%) eyes that required the exchange of lenses with different sizes. CONCLUSIONS: Implantable collamer lens implantation to correct myopia was an effective and safe surgery with high predictability and stability during long-term follow up. Slight myopic shift and cataract formation related with change in vault should be further evaluated.
BACKGROUND: The aim of this study was to determine whether implantable collamer lens (ICL) implantation to correct myopia is an effective and safe surgical option even after long-term follow up. DESIGN: A retrospective observational study was carried out. PARTICIPANTS: A total of 281 eyes of 145 myopic patients were included in the study. METHODS:Patients underwent ICL implantation and had the follow-up period of at least 5 years (87 ± 18.9 months). MAIN OUTCOME MEASURES: Outcome measures included uncorrected and corrected distance visual acuities, refraction for the evaluation of efficacy, safety, stability and predictability, ICL vault and adverse events. RESULTS: The final mean logMAR uncorrected and corrected distance visual acuities were 0.02 ± 0.19 and -0.12 ± 0.13, respectively. The mean efficacy and safety indices were 1.04 ± 0.32 and 1.20 ± 0.26. The mean spherical equivalent decreased from -8.74 ± 2.27 diopter (D) to -0.58 ± 0.72 D, and there was high predictability with 69.8% and 87.2% having a postoperative refraction within 0.5 D and 1.0 D, respectively. The mean postoperative vault was changed from 2.53 ± 0.6 to 2.00 ± 0.7. Six (2.1%) eyes developed cataract, and the mean endothelial cell loss was 7.8 ± 8.3%. Increased intraocular pressure was found in two (0.7%) eyes that required the exchange of lenses with different sizes. CONCLUSIONS: Implantable collamer lens implantation to correct myopia was an effective and safe surgery with high predictability and stability during long-term follow up. Slight myopic shift and cataract formation related with change in vault should be further evaluated.