Racing Goggles
Swimmers should ideally have training goggles and racing goggles (just as they have separate training suits and racing suits)
Many swimmers choose to race in Swedish Goggles, they are quite basic,come in kit form, have no rubber around the eye sockets and can be a little uncomfortable BUT they are a tight fit and are fine for the duration of a race.
Check out the details
http://en.wikipedia.org/wiki/Swedish_goggles