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 Damage in the Short Term Is Possible. It can take years before you experience any of the sun's damaging effects on your eyes. But, some damage can occur in the short term, such as photokeratitis and photoconjunctivitis, an. of the membrane outside of the eye (think pink eye).