I have an OEM rubber eyepiece for my Nikon FE, which I like because I wear glasses and it protects them from scratches.

The problem is that it also blocks the back, so I need to unscrew it every time I change a roll of film which is a pain.

Are there any alternatives that would allow the back opening as well as protect my glasses? (note that using diopters and leaving my glasses off is not an option)

I don't think even trimming it down would work because the metal part of the eyepiece that holds the rubber on extends too low as well.

Any ideas?