Glaucoma is an eye condition in which increased pressure is formed within the eyeball, causing gradual loss of sight. It is a long-term complication of diabetes.
Empath: The Luckiest Smurf stories[]
In the EMPATH: The Luckiest Smurf story series, Orbit Smurf has a form of glaucoma that he is being treated for with eyedrops made of smurfnip extract.