A COLOUR vision survey has recently been carried out on 500 subjects at the Imperial College as a contribution to a Report on Colour Vision Tests pre- pared by a Committee appointed by the International Council of Ophthal- mology. Five different sets of confusion chart tests (commonly referred to as pseudo-isochromatic plates) were used, as follows:
No takes yet. Share an insight, caveat, or question.
Belcher et al. (1958) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: