MyoRing植入术治疗圆锥角膜的疗效观察

Efficacy of MyoRing implantation in the treatment of keratoconus

目的:比较MyoRing植入前后圆锥角膜(KCN)患者角膜前后表面散光和全屈光散光。方法:历史队列研究。比较植入360度全环植入物(MyoRing)的KCN患者的术前和术后全屈光、角膜前后表面散光,术后3、6、9、12 mo连续随访四次。结果:共纳入KCN患者79例85眼,其中男43例,女36例,平均年龄29±7.41(17-48)岁。随访期间,全屈光散光、角膜前后表面散光呈减少趋势。MyoRing植入后12 mo,总屈光散光测量值显著下降2.09 D (4.27±3.15 vs2.18±1.63 D,P<0.001)。此外,术后测量显示,角膜前表面和后表面散光分别改善约3.20 D和0.59 D[6.40±1.90 vs 3.20±1.75 D(P<0.001)和1.30±0.55 vs 0.71±0.35(P<0.001)]结论:MyoRing植入可显著改善散光参数,包括全屈光散光以及角膜前后表面散光。

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.