摘要
目的 :分析第三代角膜塑型镜片在治疗近视中的作用及影响其疗效的相关因素。方法 :分析比较 14 1例 2 76眼角膜塑型术前后裸眼视力、屈光度、角膜屈光度等随时间变化的量及角膜形态因素、眼内压、角膜厚度等因素与疗效的关系。结果 :角膜塑型术后 1w患者即表现为角膜屈光度下降 (P <0 .0 5 ) ,总体屈光度下降 (P <0 .0 5 ) ,裸眼远视力明显提高 (P <0 .0 5 ) ;角膜屈光度、角膜非球面特性与角膜发生的屈光度改变相关 (P <0 .0 5 )。结论 :第三代角膜塑型术是一种快速可逆非根治性治疗近视的方法。角膜的屈光度、非球面特性与角膜可能发生的改变呈正相关。
Objective:To assess visual,refractive and topographic changes in subjects undergoing overnight Orthokeratology and the predictability of the treatment.Methods:In this study of pre and post Orthokeratology on vision,refraction,apical corneal power and topographic changes were measured. Studies were also done to assess whether a correlation exists between refractive change and corneal shape,apical corneal power,intraocular pressure(IOP),and corneal thickness.Results:Uncorrected visual acuity improved significantly by day 7(P<0.05). The mean subjective refraction,autorefraction and apical corneal power were significantly reduced(P<0.05). A strong correlation was found between refractive change,apical corneal power change and corneal eccentricity(P<0.05),and between refractive change and apical corneal power change(P<0.05). A weaker correlation was found between IOP,corneal thickness and apical corneal power change.Conclusion:Overnight Orthokeratology is an effective means for temporarily reducing myopia. Corneal shape and corneal eccentricity can be used as a predictive tool to estimate the likely degree of myopia reduction with Orthokeratology.
出处
《眼视光学杂志》
2004年第1期6-9,共4页
Chinese Journal of Optometry & Ophthalmology
基金
国家自然科学基金项目 (3 9770 791)
