“The Master of Online Mayhem”. Forbes (2011年2月9日). 2011年2月13日閲覧。 “The founder of videogame seller Valve suffers from Fuchs Dystrophy, a congenital disease that slowly destroys the cornea. "I have dead-people eyes", he said at the time. Double cornea transplants in 2006 and 2007 cured him and changed him utterly.”
