Validity of the Holmes-Wright lantern as a color vision test for the rail industry.

Abstract:

:A simulated field test was designed to determine whether the Holmes-Wright A lantern (HWA) is a valid color vision test for the rail industry. The simulation replicated viewing rail signal lights at 0.8 km distance under daylight conditions. Using the worst-normal as the maximum number of allowable errors on the simulation, 94% of the color-defectives failed both tests on the first trial and 92% failed at the second session. The HWA had a higher false negative rate than a false alarm rate. The majority of individuals who had discrepancies on the two tests were mild deutans. Results from the Ishihara test were marginally better at predicting performance on the simulation.

journal_name

Vision Res

journal_title

Vision research

authors

Hovis JK,Oliphant D

doi

10.1016/s0042-6989(98)00054-6

subject

Has Abstract

pub_date

1998-11-01 00:00:00

pages

3487-91

issue

21

eissn

0042-6989

issn

1878-5646

pii

S0042-6989(98)00054-6

journal_volume

38

pub_type

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