I found this link from the the Thinking meat blog site
http://www.biologicalpsychiatryjournal.com/article/S0006-3223(10)00129-0/abstract
Its about sensing the contrast ratios of the retina in depressed people and how it be demonstrated to be different.Less constrast in the retina accurately foretold a patient with a depressive illness.
I can add my little observation as well.The title is more literally true than it turns out in the research.In my twenties , I noticed that one of my eyes had a flatter cooler colour range than the other .I instinctively knew that my two cerebral hemispheres had differing emotional ‘vectors’ and this was showing up in how they perceived colour.It was so slight an effect and I had to blink alternately repeatedly to reveal the effect….but it was there.
Now that stressful part of my life is gone …and so has the effect.But it remained for years at the time.
People perspire differently on both sides of the body , muscles hang differently on the face if you look carefully , the eyes stress differently ( and hence differing opthalmic flaws for each eye ) …..we can be two very different slices of human beings glued down the middle.
