It’s been six months since the height of the latest Ebola epidemic. The virus, while mostly contained, is still being discovered in different parts of West Africa. Ebola is a bizarre and deadly disease that confounds even the most dedicated researchers. However, despite the lack of a vaccine, doctors have been able to save some of those afflicted by the disease.

One person who was saved from Ebola is American physician Dr. Ian Crozier. The medical team at Emory University Hospital managed to save Crozier after he contracted Ebola in Sierra Leone. Since then, Crozier has gone on to make a full recovery. At least that’s what researchers thought until a few months ago…

Those who survive an Ebola infection typically experience what researchers have come to call “post-Ebola syndrome.”

The syndrome manifests itself in an array of symptoms that can vary from case to case.

The evidence for post-Ebola syndrome to this point is only anecdotal, but can include joint and muscle pain, fatigue, and hearing loss.

Dr. Crozier has come down with one of the strangest reported post-Ebola symptoms of all.

A few months after being released from the hospital, Crozier says he began to experience pain and vision problems in his left eye. After several days, his iris had turned from blue to green. You can see the before and after comparison above.

When Crozier was discharged, his blood was completely free of the Ebola virus, making the situation that much stranger.

(via: io9)

This just goes to show you how little we really know about the Ebola virus and its lingering effects on those who survive an infection. Hopefully doctors figure out what happened to Crozier’s eye so they can prevent it from happening again to another survivor.