Barbara Marquand is a staff writer at NerdWallet, a personal finance website. Email: bmarquand@nerdwallet.com. Twitter: @barbaramarquand.
The eye may change color due to alteration of genes in the cells of the iris. This is because of your DNA factors in the body. The gene alteration can cause the eye to change color from brown to green and vise verse. There is no any explanation to the cause of the genes behaving in these manner. Prolonged exposure to the sun might also be another cause that made my eyes to change the color.
Eye color is the resulting effect when light breaks up across the melaninâs base. Human eye colors range from the lightest tints of blue to the darkest shades of brown. The appearance of hazel eyes, as well as blue and green eyes, is a result of the Tyndall scattering of light in the stroma.