focus your eyes on something far away, like across the room away from the computer screen. "Lock" your vision on something far away, and then look back at the image. It'll slowly come into focus, and then it'll feel like it'll "snap" into view. Or you can do the "put your nose against the screen & slowly back away", but I don't like that. You can get a reverse image by crossing your eyes and then uncrossing them. For some reason, it does the 3D in reverse.
