Star Test
 Pass your mouse over the condition you wish to see at  left.
 The page always begins showing the star using Fine Optics
 at the best focus. This is the condition returned to by the
 Reset link.
 Fine Optics collimated both sides of focus
 Fine Optics uncollimated both sides of focus
 Astigmatic Optics collimated one side of focus
 Astigmatic Optics collimated other side of focus
 Reset