They are both oil paintings, 4 x 6 ins. The green eye is lit from below, the blue eye from the front. It was a thoroughly enjoyable exercise!
I have always found eyes fascinating. How can living tissue form a transparent optical material? The process of perceiving color and value and transforming that into a readable, meaningful image has seemed wonderful to me. How can cells fmake an adjustable focus lens? These were some of the reasons that led me to pursue a training and qualification in Optometry. (The others were the Ah-ha moment when I first put on glasses to correct my short-sightedness at age nine, and the benefit I received from contact lenses as a teenager).
Now I am appreciating eyes from a different viewpoint!