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.
Elijah. When transition eyeglasses are exposed to UV light directly, they will change the color. Agood pair of photochromic lenses usually turn dark in response to UV light within one minute, for 40 seconds.And they continue to darken over the next fifteen minutes.he color of the lenses will get lighter within two minutes and mostly clear within five minutes. It is abnormal for your photochromiv lenses to start to change color 2 minutes later. You'd better check with your optician.