Viral Infections Change Eye Color

"How can a viral infection change the color of a person’s eye?" asks the New York Times. "Months after Dr. Ian Crozier thought he had recovered from Ebola, he was stunned to find himself developing intense eye pain and fading vision. The inside of his left eye was still occupied territory, full of live, replicating virus. And one morning during this siege, he looked in the mirror and saw that his iris had changed from blue to green. Although such color changes are rare, they do occur from time to time during viral infections, eye doctors say. Herpes viruses are the most common cause, but other viruses can do the same thing. The changes in hue are almost always permanent." Read more. See this post as well.