Many watch aficionados think that the appearance of watch dial can be enhanced with the removal of the cyclops aperture. It is, in fact, possible to remove a cyclops magnifier with a butane torch and razor blade in less than 10 seconds. The video below walks you through step-by-step. That said, we don't recommend that you use this method for a higher quality watch.
For something like a Rolex, we suggest you remove the crystal and soak it in acetone until the cyclops comes off (1-2 days). The crystal can then be reinstalled. But this should be done under the guidance of a watchmaker or watch repair professional. Avoid the "chisel-and-tap" method which is sometimes promoted as a quick, cheap alternative.
A final note of caution: none of these cyclops removal techniques are for the faint of heart so proceed carefully.