I heard a rumor as a kid that if you deposited your turtle in a bathtub while you cleaned it's cage and then forgot about it and left it there for a few hours, it's brain couldn't comprehend where it was because there would be only white in every direction and it would cause the turtle to go insane or, in some tellings, blind, hence the term I have heard used "tub blind."
Just wondered if anyone agreed or disagreed with this or if there is any hard evidence out there? Seems kind of fishy but then I have been wrong before.

