I haven't read all the responses, so maybe this was already mentioned, but maybe you're like me, the doctor called me a 'bad blinker'
I've had a traumatic brain in jury, and had some nerve damge in my face, and when I blink, I don't do it fully, so there's a ridge or line, where I don't fully blink, so it's dry. I just use eye dropes, maybe 20 times a day, or whenever I think of it.