口腔正畸就诊人群错颌畸形患者视力异常患病情况调查

Objective The aim of this study is to evaluate the prevalence of visual impairment(myopia,astigmatism,strabismus and hyperopia) in patients with class Ⅰ and Class Ⅱ malocclusion,and to clarify the correlation between the types of malocclusion and visual impairment,so as to provide a clinical basis for eye health screening during orthodontic treatment.Methods A total of 40 patients were screened to assess the prevalence of visual impairment and malocclusion.All patients classified with Angle Class Ⅰ and Class Ⅱ malocclusion underwent ophthalmologic examination to evaluate visual disorders.The prevalence of visual impairment was calculated as a percentage of the total sample.The Chi-square test was used to analyze the differences in the prevalence of various types of visual impairment across patients of different genders.Results Myopia was the most common(22.5%),followed by astigmatism(about 20.0%),hyperopia(about 12.5%) and strabismus(about 2.5%).Class Ⅱ malocclusion has a higher prevalence of myopia,whereas Class Ⅰ malocclusion has a higher prevalence of astigmatism and hyperopia.No significant differences in visual deficits were found between the sexes.Conclusions Compared with patients with class Ⅱ malocclusion,patients with class Ⅰ malocclusion had a higher proportion of hyperopia and astigmatism.The prevalence rate of myopia in class Ⅱ malocclusion is significantly higher.