屈光参差性弱视的轮廓察觉研究  

Contour Integration Deficits in Anisometropic Amblyopia

作　　者：刘洪婷[1] 刘伟民[1] 阎丽[2] 赵武校[1] 王英[1] 

机构地区：[1]广西壮族自治区人民医院视光科,广西南宁530021 [2]中山大学人类健康与发展中心国家医疗保健器具工程技术研究中心,广东广州510000

出　　处：《临床医学工程》2010年第10期18-20,共3页Clinical Medicine & Engineering

基　　金：广西壮族自治区卫生厅重点科研项目"弱视患者视觉信息加工缺陷研究"(编号:桂卫重200957)

摘　　要：目的研究屈光参差性弱视的轮廓察觉能力,从心理物理及神经认知学角度考察屈光参差性弱视患者的视觉信息处理状态,了解弱视眼及对侧健眼的视知觉是否存在异常。方法对47例轻中度屈光参差性弱视患者的弱视眼及对侧健眼进行轮廓察觉任务的检查,并将检查结果与正常视力儿童组做对照。结果 R均值由大到小的顺序为正常组(R=0.5894)、对侧健眼组(R=0.4892)、弱视组(R=0.3586)。其中弱视组R的95%置信区间与正常儿童组的无重叠,屈光参差性弱视患者弱视眼、对侧健眼的轮廓察觉能力均低于正常儿童。结论屈光参差性弱视患者弱视眼及对侧健眼在轮廓察觉能力上存在一定缺陷,可能是由于高级视皮层视觉信息处理的异常及双眼视知觉的交互不足造成的。Objective To assess the effect of anisometropic amblyopia on contour integration. Methods Contour detection task was assessed in children with anisometropic amblyopia（N = 47） and children with normal visual acurity（N = 80） . Results The average R value was ordered from larger to little as control group（R = 0.5894） ,lateral eyes group（R = 0.4892） ,amblyopia eyes group（R = 0.3586） ,there was significant difference between control group and amblyopia eyes group. Conclusion Anisometropic amblyopia shows significant degradation of performance in both eyes compared to normal children. An abnormal pattern of long-range connectivity between spatial filters or a loss of such connectivity appears to be the primary source of contour integration deficits.

关 键 词：屈光参差性弱视 轮廓察觉 视知觉 

分 类 号：R777.44[医药卫生—眼科]