Colour vision profoundly affects us all but what is it?
This interesting question came up again today via a post on Facebook by my friend Lynda Chase-Gardener.
“Special eyes” said Francis Pratt of The painting School of Montmiral.
Francis has to be one of the world’s leading authorities on this subject, one that illuminates all our lives. 
As a visual artist I’ve spent many years studying, experimenting and working with experts on aspects of colour vision, in particular Francis Pratt and quite separately, with David Folley,
“Special eyes”; explained the sometimes odd paintings I have produced since childhood.
