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Efficacy of Myoring Implantation in the Treatment of Keratoconus; [Myoring 植入术治疗圆锥角膜的疗效观察] Publisher



Khorraminejad M1 ; Jumaah R1 ; Karimi F2 ; Jadidi K3 ; Farahani M4 ; Yousefi R1
Authors

Source: International Eye Science Published:2024


Abstract

• AIM: To compare the anterior and posterior corneal astigmatism and total refractive astigmatism before and after MyoRing implantation in keratoconus (KCN) patients. • METHODS: In this historical cohort study, the preoperative and postoperative total refractive, anterior and posterior corneal astigmatism of KCN patients implanted with a 360- degree full- ring implant (MyoRing) were compared before and after four consecutive follow - up sessions at 3, 6, 9, and 12 mo after surgery. •RESULTS: The study encompassed 79 KCN patients (85 eyes), comprising 43 males and 36 females. The mean age of the patients was 29± 7.41 years, ranging from 17 to 48 years. Throughout the follow - up sessions, a gradual decrease was observed in the trend of changes for total refractive astigmatism, anterior corneal astigmatism, and posterior corneal astigmatism. Postoperatively, total refractive astigmatism measurements exhibited a significant decrease of 2. 09 D at 12 mo after MyoRing implantation (4. 27 ± 3. 15 vs 2. 18 ± 1. 63 D, P < 0. 001) . Additionally, post - operative measurements revealed an enhancement of approximately 3. 20 D and 0. 59 D for anterior and posterior corneal astigmatism, respectively [ 6.40± 1.90 vs 3.20± 1.75 D for anterior corneal astigmatism (P< 0. 001) and 1. 30 ± 0. 55 vs 0. 71 ± 0. 35 D for posterior corneal astigmatism (P< 0.001) ] . • CONCLUSION: MyoRing implantation demonstrates significant improvements in astigmatism parameters, encompassing total refractive astigmatism as well as anterior and posterior corneal astigmatism. © 2024 International Journal of Ophthalmology (c/o Editorial Office). All rights reserved.
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