I would agree with the first two people, I think this particular reality test is too susceptible to projections of what you may unconsciously assume will happen. I think on some level you always expect your vision to be blurry without glasses even if your trying to be objective about the whole thing. I have found that holding ones nose and trying to breath is a reliable method. And like Travis E. said I would suggest building a procedure of several distinct dream tests to be done one after the other in quick succession.