polygenic phenotypic character determined by two distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris
Each of us has about 35,000 genes that determine hair color and texture, skin and eye color, height, and other features of our individual physical appearance.
As it happens, all 100 prisoners have green eyes, but they've lived there since birth, and the dictator has ensured they can't learn their own eye color.
His experiments included placing subjects in pressure chambers, testing drugs on them, freezing them, attempting to change their eye color by injecting chemicals into children's eyes and various amputations and other brutal surgeries.
Her style of illustration has been described as "bold and mysterious", and as "traditional Australian Aboriginal representation rendered in bright, eye-catching colors."