双通道视觉质量分析系统评价弱视儿童的视觉质量

发布时间：2019-05-25 04:19

【摘要】：目的应用双通道视觉质量分析系统(optical quality analysis system,OQASⅡ)比较弱视儿童与正常儿童视觉质量和散射的差异,为临床应用提供一定的参考依据。方法在广西视光中心弱视门诊就诊患儿中随机选取弱视儿童28例(53眼)和正常儿童28例(47眼)作为弱视组和正常对照组,所有入选儿童行客观视觉质量分析系统(OQASⅡ,Visiometrics公司)检测、散瞳检影验光和标准对数视力表评估。比较两组屈光度、视力、MTF截止空间频率(MTF cutoff)、斯特列尔比值(strehl ratio,SR)、客观散射指数(objective scattering index,OSI)值及对比度为100%、20%、9%时的OV值(OQAS value,OV100%、OV20%和OV9%)。结果弱视组矫正视力和等效球镜分别为0.26±0.17 log MAR和(2.91±3.25)D,弱视组MTF cutoff、SR、OSI、OV100%、OV20%和OV9%分别为(30.91±15.24)c·d-1、0.20±0.11、1.15±1.42、(1.03±0.51)c·d-1、(0.78±0.45)c·d-1、(0.52±0.38)c·d-1;正常对照组MTF cutoff、SR、OSI、OV100%、OV20%和OV9%分别为(37.49±9.81)c·d-1、0.23±0.07、0.74±1.39、(1.25±0.33)c·d-1、(0.94±0.30)c·d-1、(0.61±0.21)c·d-1。两组儿童MTF cutoff、OV100%和OV20%比较,差异均有统计学意义(均为P0.05)。弱视儿童的球镜和柱镜度数与MTF cutoff、SR、OSI、OV100%、OV20%和OV9%均存在统计学意义的相关性(均为P0.05)。结论弱视儿童的视觉质量较正常儿童差,且主要表现在中高频对比度部分下降,散射不是导致弱视儿童视觉质量下降的因素。
[Abstract]:Objective to compare the difference of visual quality and scattering between amblyopia children and normal children by using dual channel visual quality analysis system (optical quality analysis system,OQAS II), and to provide some reference for clinical application. Methods 28 amblyopia children (53 eyes) and 28 normal children (47 eyes) were randomly selected as amblyopia group and normal control group. All the selected children were treated with objective visual quality analysis system (OQAS II). Visiometrics) Detection, mydriasis optometry and standard logarithmic visual acuity scale evaluation. The diopter, visual acuity, MTF cutoff spatial frequency (MTF cutoff), Steller ratio (strehl ratio,SR), objective scattering index (objective scattering index,OSI) and contrast were compared with 100%, 20% and 9% of the two groups (OQAS value,OV100%,). (OV20% and OV9%). Results the corrected visual acuity and equivalent spherical lens were 0.26 卤0.17 log MAR and (2.91 卤3.25) D in amblyopia group, and (30.91 卤15.24) c 路d-1 in amblyopia group, 0.20 卤0.11 and 1.15 卤1.42 in amblyopia group, respectively. (1.03 卤0.51) c 路d-1, (0.78 卤0.45) c 路d-1, (0.52 卤0.38) c 路d-1; MTF cutoff,SR,OSI,OV100%,OV20% and OV9% in normal control group were (37.49 卤9.81) c 路d ~ (- 1), 0.23 卤0.07, 0.74 卤1.39, (1.25 卤0.33) c 路d ~ (- 1), (0.94 卤0.30) c 路d ~ (- 1), respectively. (0.61 卤0.21) c 路d-1. There were significant differences in MTF cutoff,OV100% and OV20% between the two groups (P 0.05). There was a statistically significant correlation between the number of spherical and cylindrical mirrors and MTF cutoff,SR,OSI,OV100%,OV20% and OV9% in amblyopia children (P 0.05). Conclusion the visual quality of amblyopia children is worse than that of normal children, and it is mainly manifested in the partial decrease of middle and high frequency contrast. Scattering is not the factor leading to the decrease of visual quality of amblyopia children.
【作者单位】：广西壮族自治区人民医院视光科广西视光中心;
【基金】：广西卫生厅科研课题(编号:桂卫重2012099、桂卫Z2013345)~~
【分类号】：R777.44

【参考文献】