Mayo researchers studied three patients — two women and a man — who were treated for inflammatory disease and developed melanoma tumors in one eye within a year to two of taking TNF inhibitors. While this type of condition is probably rare, according to the researchers, there might be an increased risk if the patient has a pre-existing nevus (freckle of the eye). The women had inflammatory bowel disease; the man had rheumatoid arthritis. The studies occurred between 2009 and 2013.
Researchers say that patients considered for treatment with TNF inhibitors should first be given an eye exam to determine eye health, and any with existing conditions, such as choroidal nevus (lesions on the eye), should be monitored regularly to determine if any issues are developing.
source : http://www.sciencedaily.com/releases/2014/11/141117130733.htm