Efficacy of MyoRing implantation in the treatment of keratoconus
10.3980/j.issn.1672-5123.2024.4.02
- VernacularTitle:MyoRing植入术治疗圆锥角膜的疗效观察
- Author:
Khorrami-Nejad MASOUD
1
;
Jumaah RAWSHAN
1
;
Karimi FARSHID
1
;
Jadidi KHOSROW
1
;
Farahani MOBINA
1
;
Yousefi REZA
1
Author Information
1. School of Rehabilitation, Tehran University of Medical Sciences, Tehran 1416753955, Iran
- Publication Type:Journal Article
- Keywords:
keratoconus;
intrastromal corneal ring implants;
MyoRing;
corneal topography;
total astigmatism;
corneal astigmatism
- From:
International Eye Science
2024;24(4):500-507
- CountryChina
- Language:Chinese
-
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.
