Several members have complained about blackout problems when using the Nikon 10x42 SE with eyeglasses when the eyecups are rolled down. I have recently made a modification to mine that seems to address the problem.
It involves using neoprene fender washers (available at my hardware store) and drilling out the center to match the size of the eye lens on the 10x42s. The washers are then attached using rubber cement to the face of the oculars. Rubber cement is good because it allows the whole thing to be removed without leaving a trace.