Cole B L, Maddocks J D
Department of Optometry and Vision Sciences, University of Melbourne, Parkville, Victoria, Australia.
Vision Res. 1998 Nov;38(21):3483-5. doi: 10.1016/s0042-6989(98)00119-9.
Clinicians usually do not have access to a lantern test when making an occupational assessment of the ability of a person with defective colour vision to recognise signal light colours: they must rely on the results of ordinary clinical tests. While all colour vision defectives fail the Holmes Wright Type B lantern test and most fail the Holmes Wright Type A lantern, 35% of colour vision defectives pass the Farnsworth lantern. Can clinical tests predict who will pass and fail the Farnsworth lantern? We find that a pass (less than two or more diametrical crossings) at the Farnsworth Panel D 15 Dichotomous test has a sensitivity of 0.67 and specificity of 0.94 in predicting a pass or fail at the Farnsworth lantern test: a Nagel range of > 10 has a sensitivity of 0.87 and a specificity of 0.57. We conclude that neither the D 15 nor the Nagel Anomaloscope matching range are satisfactory predictors of performance on the Farnsworth Lantern.
临床医生在对色觉有缺陷的人识别信号灯颜色的能力进行职业评估时，通常无法进行兰氏试验：他们必须依靠普通临床检查的结果。虽然所有色觉缺陷者都无法通过霍姆斯·赖特B型兰氏试验，且大多数无法通过霍姆斯·赖特A型兰氏试验，但35%的色觉缺陷者能通过法恩斯沃思兰氏试验。临床检查能否预测谁能通过以及谁会通不过法恩斯沃思兰氏试验呢？我们发现，在预测法恩斯沃思兰氏试验的通过或不通过情况时，法恩斯沃思D - 15二分法试验中获得通过（少于两个或更多直径交叉）的敏感度为0.67，特异度为0.94：纳格尔范围大于10时，敏感度为0.87，特异度为0.57。我们得出结论，D - 15试验和纳格尔色盲检查镜匹配范围都不是法恩斯沃思兰氏试验表现的令人满意的预测指标。
