I'm sure I'm not onto something but I just thought I would put this out there anyways. I've been lucky with my vision. At 59 I have never wore glasses (except "readers" the past few years) but now I'm due for full time glasses since my right eye is going bad. I've been an avid amateur for over 20 years, with the majority of my observing done with a 10 inch Dob, looking with my right eye. I'm not claiming that is why my right eye went bad. I'm simply asking if any research has been done on this. If not, have any of you long time observers had your eyepiece eye be the first to go bad?
I'm making no assumptions here since I have been assured that things like Venus at high magnification are no danger.....still, just thought I'd ask.