阅读视力、双眼及单眼视力关系的实验性研究

Experimental study on the relationship among reading acuity, binocular acuity and monocular acuity

目的实验研究阅读视力、双眼视力及单眼视力的关系。方法单眼裸眼视力≥0.8(4.9)的志愿者,Bangerter压抑膜模拟视力降低,分为两眼视损害(两眼组)和单眼视损害(单眼组),检验单眼视力、双眼视力和阅读视力。结果 19～22岁受试者,(1)两眼组56人次,阅读视力与双眼视力、好眼视力、差眼视力的相关系数r分别为0.700、0.683和0.683(P<0.001),双眼视力与好眼视力、差眼视力的相关系数r分别为0.860和0.891(P<0.001);单眼组56人次,阅读视力与双眼视力、好眼视力、差眼视力的相关系数r分别为0.544(P<0.001)、0.572(P<0.001)和0.041(P=0.714),双眼视力与好眼视力、差眼视力的相关系数r分别为0.634(P<0.001)和-0.008(P=0.939)。(2)两眼组两眼间视力差平均0.6行,单眼组8.6行,双眼视力比好眼视力平均高1行和0.2行(Z=-5.091,P<0.001);阅读视力均低于双眼视力。结论阅读视力、双眼视力与好眼视力相关性较高,与差眼视力相关性低。双眼视力和阅读视力具有独立的视功能评价作用。

Objective To study the relationship among reading acuity, binocular acuity and monocular acuity experimentally. Methods Reading acuity, binocular acuity and monocular acuity were measured in subjects with acuity of at least 4.9 （0.8） in each naked eye, degraded binocularly （Group A） and monocularly （Group B） was mimicked with Bangerter filters. Results Subjects aged 19 to 22 years were recruited. （1） In Group A （56 person）, reading acuity was correlated with binocular acuity, the better eye acuity and the worse eye acuity （r=0.700, 0.683, 0.683, P〈0.001）. Binocular acuity was correlated with the better eye acuity and the worse eye acuity （r=0.860, 0.891, P〈0.001）. In Group B （56 person）, reading acuity was correlated with binocular acuity, the better eye acuity and the worse eye acuity （r=0.544, P〈0.001; r=0.572, P〈0.001; r=0.041, P=0.714）. Binocular acuity was correlated with the better eye acuity and the worse eye acuity （r=0.634, P〈0.001; r=-0.008, P=0,939）. （2） The mean interocular differences in Group A and B were 0.6 and 8.6 line. The mean binocular summation in Group A and B were I and 0.2 line （Z=-5.091, P〈0.001）. Reading acuity was lower than binocular acuity. Conclusion Reading acuity and binocular acuity were highly correlated with the better eye acuity, while weakly correlated with the worse eye acuity. Reading acuity and binocular acuity have unique significances.