西藏藏族与汉族青年立体盲患病率的调查研究

Survey on Stereo Blindness Morbidity in Tibet Young Tibetan and Han Nationality

目的:探讨立体视觉异常与立体盲在西藏藏族与汉族青年的流行病学情况。方法:随机选取藏族、汉族青年各200名,设为藏族组和汉族组,分别进行立体视锐度定量测定、交叉视差定量测定、非交叉视差定量测定与中心性抑制暗点测定。结果:藏族、汉族青年立体视觉异常率分别为34.5%、17.5%,立体盲患病率分别为7.5%、2.5%,两组比较,差异均具有统计学意义(P<0.05)。色觉异常者的立体视觉异常、立体盲频率较正常人为高。结论:立体视觉异常与立体盲可能存在着种族与地区性差异,其遗传可能与色盲异常有关。

Objective：To explore the epidemiological situation of stereoscopic vision abnormalities and stereoscopic blindness in Tibet young Tibetan and Han nationality.Methods：Randomly selecting each 200 youth in Tibetan and Han nationality,and setting as Tibetan and Han group respectively,then testing stereoacuity quantitative determination of crossed disparity,quantitative determination,uncrossed parallax quantitative determination and central suppression scotomata determination.Results：Stereo vision abnormal rates were 34.5%,17.5%,and stereo blindness morbidity rates were 7.5%,2.5% in youth of Tibetan and Han nationality respectively,and there were statistical differences（P 0.05）.Frequency of stereoscopic vision abnormalities and stereo blindness in color vision abnormalities were higher than normal one.Conclusion：Stereo vision abnormalities and stereo blindness may exist racial and regional differences,their genetic maybe associate with achromatopsia..