Test time affects Farnsworth D15 outcomes in practiced, but not unpracticed, subjects with color vision deficiency.
Anne Arah ChoJason S NgPublished in: Optometry and vision science : official publication of the American Academy of Optometry (2024)
In this study, test time was found to affect performance in practiced subjects but not in unpracticed subjects. Based on this study, we recommend enforcing a time limit of 2 minutes to discourage those who try to pass the Farnsworth D15 through practice. Additional measures, such as recording patient behavior, can also be taken.