Analysis of the effect of orthokeratology on controlling myopia in adolescents

Abstract:

Objective To analyze the factors influencing the effect of wearing orthokeratology on controlling myopia in adolescents， and provide basis for clinical work.Methods A retrospective study was conducted among 105 cases of juvenile myopia（206 eyes） who came to the Wuhan Aier Eye Expert Hospital affiliated to Wuhan University from February to August，2019. The correlation between the parameters（age，gender，diopter，axial length，corneal astigmatism，flat k，steep k，eccentricity value，pupil diameter， corneal diameter，position） and ocular axial length changes after wearing orthokeratology for 18 months was analyzed. SPSS 23.0 was used for generalized linear model fitting and one-way ANOVA.Results Backward selection multivariate analysis showed that the ocular axial length changes were correlated with the age and original diopter（P<0.001，P<0.001）. The older the patient’s baseline age，the slower the axial length growth. The one-way ANVOA showed that the effect of myopia above -3.00 D was better than that below -3.00 D（P<0.01），showing no significant difference between the two groups.Conclusion Age and diopter are influencing factors of wearing orthokeratology to control juvenile myopia. The axial growth of the older patients is slower than that of the younger patients，so each area of the orthokeratology should be designed individually for the younger patients. The effect is better on myopia above -3.00 D than that on myopia below -3.00 D. However，the control effect of myopia less than 3.00 D and greater than 3.00 D is not affected by the increase or decrease of diopter. Patients with myopia below -3.00 D should be closely followed up and treated combined with other myopia control methods.