角膜塑形镜对青少年近视眼视力、眼压及生物测量参数的影响

目的 探讨角膜塑形镜对青少年近视眼视力、眼压及生物测量参数的影响.方法 随机选取2013年1月至2015年12月在河北省眼科医院佩戴角膜塑形镜的青少年近视患者72例(136眼),年龄8～16岁,比较戴镜前,戴镜后1周、1个月、3个月和6个月视力、眼压、眼轴长度、角膜地形图、角膜厚度、前房深度的变化.结果 佩戴角膜塑形镜后,患者的裸眼视力明显改善(P＜0.05),平均屈光度下降(P＜0.05);患者的非接触眼压降低(P＜0.05);眼轴长度较佩戴前变化不大(P＞0.05).戴镜后前房深度较戴镜前未见明显变化(P＞0.05).戴镜1周后角膜曲率较戴镜前下降(P＜0.05),其后角膜曲率趋于稳定;角膜厚度较佩戴前无明显变化(P＞0.05);角膜厚度较佩戴前减小(P＜0.05),其后3、6个月趋于稳定.结论 角膜塑形镜可降低近视度数,提高裸眼视力,对青少年近视控制效果明显,佩戴角膜塑形镜后眼压及生物测量参数发生相应变化.

Influence of orthokeratology lens on vision,intraocular pressure and biometric measurement parameters of adolescent myopia

Objective To evaluate the influence of orthokeratology lenses on vision,intraocular pressure and biometric measurement parameters in adolescent myopia.Methods A total of 72 adolescent myopia patients (136 eyes) with orthokeratology lens,aged 8-16 years old,in Hebei Provincial Eye Hospital from Junuary 2013 to December 2015 were randomly selected.The vision,intraocular pressure,axial length,corneal topography,corneal thickness and anterior chamber depth were observed before wearing glasses,at 1 week,1,3,6 months after wearing glasses.Results After orthokeratology wearing,the uncorrected visual acuity was obviously improved (P＜0.05),the average refraction diopter was declined (P＞0.05) and the non-contact intraocular pressure was decreased (P＜0.05).The axial length after orthokeratology wearing had little change (P＞0.05).The curvature of the patient's cornea at one week after wearing glasses was deceased (P＜0.05) and the posterior corneal curvature tended towards stability.The corneal thickness at 1 week after wearing glasses had no obvious change compared with before wearing glasses(P＞0.05),which at 1 month after wearing glasses was decreased(P＜0.05) and which at 3,6 months after wearing glasses trended to be stabilized.The anterior chamber depth after wearing glasses had no obvious change.Conclusion Orthkeratology lens can decrease the myopia degree,increases the uncorrected visual acuity and has obvious effect for controlling adolescent myopia.The intraocular pressure and biometric measurement parameters have corresponding change after wearing orthkeratology lens.