Ability of the D-15 panel tests and HRR pseudoisochromatic plates to predict performance in naming VDT colors.
Color codes in VDT displays often contain sets of colors that are confusing to individuals with color-vision deficiencies. The purpose of this study is to determine whether individuals with color-vision deficiencies (color defectives) can perform as well as individuals without color-vision deficiencies (color normals) on a colored VDT display used in the railway industry and to determine whether clinical color-vision tests can predict their performance. Of the 52 color defectives, 58% failed the VDT test. The kappa coefficients of agreement for the Farnsworth D-15, Adams desaturated D-15, and Richmond 3rd Edition HRR PIC diagnostic plates were significantly greater than chance. In particular, the D-15 tests have a high probability of predicting who fails the practical test. However, all three tests had an unacceptably high false-negative rate (9.5-35%); so that a practical test is still needed.
Ramaswamy
Shankaran
S
School of Optometry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. rshankar@uwaterloo.ca
Hovis
Jeffery K
JK
D003118:Color Perception / Q000502:physiology; D003119:Color Perception Tests / Q000592:standards*; D003117:Color Vision Defects / Q000145:classification / Q000175:diagnosis*; D006801:Humans; D010364:Pattern Recognition, Visual; D011237:Predictive Value of Tests; D011930:Reaction Time; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity