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
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.
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