There should be a variety of wear options for your CI, including a Babyworn style or a smaller battery. Some glasses are made with a wraparound style to secure them so it wraps to the back of your head rather than behind the ear. You won't see loads of them, though, so if you don't like the few styles that are available that doesn't help. An earmould and a long piece of tubing can lift the processor up a bit, or you can try to use a rubber band to secure it to your glasses so it doesn't sink down into your ear. Depending on the type, you may even be able to take off the bit that hangs over the ear and just secure it using the glasses. I know the N5 and N6 you can just pop that bit off. I used to have a lot of trouble with that when I had my old hearing aids, glasses and a hairband all fighting for space behind my ear. Thankfully it's less trouble now as I have some of the N5 covers over my aids and it lifts the tubing up a bit.