双通道视觉质量分析系统对青年近视患者视觉质量的评估  

Evaluation of the optical quality of young patients with myopia using the Double-pass Optical Quality Analysis System

作　　者：李佳佳[1] 郭秀瑾[1] 

机构地区：[1]河北医科大学第二医院眼科,石家庄050000

出　　处：《中华眼视光学与视觉科学杂志》2015年第5期292-295,共4页Chinese Journal Of Optometry Ophthalmology And Visual Science

摘　　要：目的 运用双通道技术客观评估青年近视患者的视觉质量,建立新的参考值范围,为国内临床诊断及评价青年近视患者的视觉质量提供依据.方法 横断面研究.选取2013年10-12月来河北医科大学第二医院眼科就诊的青年近视患者342例,按SE将其分为3组：低度组（-3.00 D及以下）、中度组（高于-3.00 D,低于-6.00 D）、高度组（-6.00 D及以上）,采用基于双通道技术的视觉质量分析系统（OQASTM Ⅱ）（出射瞳孔直径设定为4 mm）检查患者视觉质量.检测记录并分析以下参数：客观散射指数（OSI）,调制传递函数截止频率（MTF cutoff）,斯特列尔比（SR）,对比度分别为100％、20％和9％时的对比度视力（VA）、IOL及自然晶状体的调节幅度（AMP）.采用单因素方差分析及相关分析对相关数据进行统计学处理.结果 ①视觉质量参数参考值范围：低度组的OSI、MTF cutoff、SR、VA100％、VA20％、VA9％ 、AMP分别为0.48 ～0.68、36.54 ～40.20、0.22 ～0.25、1.22～1.34、1.25 ～1.41、1.32 ～1.49、1.18～1.47;中度组相应参数分别为0.61～0.76、34.55～37.07、0.21～0.22、1.15～1.24、1.16～1.26、1.20～1.30、1.28～1.48;高度组分别为1.39 ～2.20、28.40 ～31.99、0.17～0.19、0.95～1.07、0.92～1.05、0.92 ～1.05、1.62～1.88.随近视度数的增加,MTF cutoff、SR、VA100％、VA20％、VA9％数值均变小,差异均有统计学意义（F=24.6、34.6、24.6、29.6、37.6,P＜O.01）,而OSI、AMP数值变大,且高度组与低度组及中度组差异有统计学意义（F=28.7、13.4,P＜0.01）.②MTF cutoff及SR与OSI均呈负相关（r=--0.65、-0.50,P＜0.05）.OSI与年龄不相关（r=0.045,P＞0.05）.结论 本研究初步得出了OQASTM Ⅱ在不同屈光状态下的正常参考值范围,为临床提供参考依据,指导临床评估不同屈光状态下青年近视患者的视觉质量,及早发现视觉质量有异常的人群,并且也可作为屈光手术前后临床医生客观Objective To evaluate the optical quality of young patients with myopia by using the Double-pass Optical Quality Analysis System （OQASTM Ⅱ） to establish a new range of reference values;to further provide evidence for the clinical diagnosis and evaluation of myopia in young patients.Methods This was a cross-sectional study.Three hundred forty-two young patients participated in this study.Patients were divided into three groups based on spherical equivalent （SE）：a low myopia group,a moderate myopia group,and a high myopia group.Optical quality measurements for a 4.0 mm pupil were performed using the OQASTM Ⅱ.The following parameters were analyzed：the objective scatter index （OSI）,the modulation transfer function cutoff frequency （MTF cutoff）,the Strehl ratio （SR）,visual acuity （VA） at 100%,20%,and 9% contrasts and the amplitude of accommodation （AMP）.Data were analyzed using ANOVA and pearson correlation.Results ①The normal limits of OSI,MTF cutoff,SR,VA100%,VA20%,VA9%,AMP were 0.48-0.68,36.54-40.20,0.22-0.25,1.22-1.34,1.25-1.41,1.32-1.49,1.18-1.47 in low myopia group,respectively;0.61-0.76,34.55-37.07,0.21-0.22,1.15-1.24,1.16-1.26,1.20-1.30,1.28-1.48 in moderate myopia,respectively;1.39-2.20,28.40-31.99,0.17-0.19,0.95-1.07,0.92-1.05,0.92-1.05,1.62-1.88 in high myopia,respectively.As the parameter values increase,visual quality decreases in myopia,while the OSI and AMP values increase.②The OSI was negatively correlated with the MTF cutoff and SR values and the differences were statistically significant （r=-0.65,-0.50,P〈0.05）.However,the correlation between age and OSI was not statistically significant （r=0.045,P〉0.05）.Conclusion This study revealed the normal range of reference values of OQASTM Ⅱ for patients with different refractive statuses.This could provide evidence for establishing reference values,evaluating the visual quality of patients who have different degrees of myopia and discriminating healthy eyes from eyes that have early abnormalities.

关 键 词：近视 视觉质量 视觉质量分析系统 双通道 

分 类 号：R778.11[医药卫生—眼科]