Colour Discrimination

Metropsis offers three colour discrimination tests: All tests screen subjects for colour vision deficiencies as well as providing more detailed information.

The clinical investigator will be able to monitor quantitatively the progression or remission of a disease over time. Many drugs affect colour vision and the pharmacologist will find the test well suited for monitoring the short-term or long-term course of such side-effects.

Cambridge Colour Test (included in starter edition)

The Cambridge Colour Test (CCT)8,9 provides a rapid means of screening subjects for colour vision deficiencies and can also be used to examine in more detail changes in colour discrimination that occur as a result of congenital or acquired conditions10.

Low Vision Colour Test

The low vision version of the CCT uses a larger stimulus size which is more suitable for patients with low vision11.

Universal Colour Discrimination Test

The Universal Colour Discrimination Test12 is based on a discrimination task which is simple enough even for children as young as 5 years old13. The test could be easily adapted for infants to work successfully with the preferential looking technique.



8Mollon et al., Journal of Physiology 1989 (414) 5.

9Reffin et al., In Colour Vision Deficiencies X 1991: 69-76

10Regan et al., Vision Research 1994 (34): 1279-1299

11Simunovic et al., Vision Research 1998 (38) 3413-19

12Ripamonti et al., IOVS 2014 (55)13: 3536

13Ripamonti et al., IOVS 2015 (56)7: 4395