目的研究双眼视力与两单眼视力的关系,及评价其视力伤残评价作用。方法年龄18~60岁患者1 006名,检测两单眼和双眼最佳镜片矫正视力。结果双眼视力可高于、等于和低于较好单眼矫正视力,三者分别占27.14%、70.78%和1.49%,统计显示两眼视差与双眼相互作用有一定关联(χ~2=54.939,P<0.001,r=0.228)。33人单眼视力相同而双眼视力不同。结论双眼视力与两单眼视力、较好单眼视力既关联又有一定不确定性,双眼视力在视力伤残评价中具有特殊作用。 Objective To study the relationship between binocular visual acuity and monocular visual acuity and evaluate the visual impairment assessment. Methods One hundred and sixty patients aged 18-60 years old were examined for the best corrected vision of the two lenses. Results The binocular visual acuity was higher than, equal to or lower than that of the uncorrected visual acuity, accounting for 27.14%, 70.78% and 1.49% respectively. Statistics showed that binocular parallax was associated with binocular interaction (χ ~ 2 = 54.939, P <0.001, r = 0.228). 33 people with the same monocular vision and binocular vision is different. Conclusions Binocular vision is associated with both monocular visual acuity and monocular visual acuity, and binocular visual acuity has a special role in visual impairment evaluation.