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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
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Authors Affiliations
  1. 1. School of Rehabilitation, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
  2. 2. Department of Optometry, Mashhad University of Medical Science, Mashhad, 9138813944, Iran
  3. 3. Department of Ophthalmology, Bina Eye Hospital Research Center, Tehran, 1634674651, Iran
  4. 4. School of Medicine, Hamedan University of Medical Sciences, Hamedan, 6517838636, Iran

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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