It's very hard to describe. It's kind of like a suction noise but in rapid succession. I don't get it all the time but I do get it often. It usually happens with my right eye, more so than the left one. If I press my eye (of course with my eyelids closed) it makes those noises. Especially if I press the corner of my eye, closest to my nose.

When it happens with my left eye, it's the same thing.

I get this most often when I'm laying on my right side. And if I turn over, it usually stops but not always. But I get it sometimes even when I'm standing or sitting up.

And sometimes if I blink hard, it makes that noise, but only one time, not in rapid succession.

I don't know if it's related but my ENT doctor said that I have a slight deviated septum.

It doesn't hurt but it is very annoying.