The deadly Ebola virus was discovered in the eye of a U.S. doctor who contracted the disease in Africa but recovered.
Dr. Ian Crozier battled the virus for months and was eventually declared virus-free. He recently went back to the hospital with intense pain and pressure in his left eye and his eye color had changed.
"It felt almost personal that the virus could be in my eye without me knowing it," Crozier said. Experts say the delayed symptoms do not necessarily mean the patient is still contagious.