If you look at his left eye, he seems to have some kind of scouter thing on his right eye. So is that a eyepatch?
Ghetsis has long, pale green hair; he has two locks of it stick out by his eyes and one above them. He wears a red eyepeice over his right eye for unknown means.
http://pokemon.wikia.com/wiki/Ghetsis
Yes though it has not been revealed what it's for. Perhaps gamefreak put in there for show. http://bulbapedia.bulbagarden.net/wiki/Ghetsis
