To the OP - Thank you for posting this!! I am sorry some misintrepreted you so quickly; I think what you ask is a very interesting question!
I have lazy eye - I was the "eye patch" kid when I was little, as I had to wear one over my good eye for a few hours a day for years. It didn't work! My eyes never became anything close to equal. So I have glasses now with different perscriptions for each side, but I usually only wear them to drive. And usually I can see just fine, which is great, seeing where I started as a kid!
BUT - I can't see the 3D effects (and I did put the 3D glasses on!)! I never understood why I wasn't seeing anything cool! I see everyone else reaching for Donald at Philharmagic, while I just see Donald with a slight double-image blur around him. I thought everyone saw it that way, until I realized I just wasn't seeing the 3D right! I tried with and without my real glasses with the 3D ones over them, and it made no difference whatsoever - I couldn't see most of the effects!
But occassionally I can see a stray effect or two - when Ariel reaches out in Philharmagic, I can see that one OK.

And at Universal, I remember at Terminiator 3D I was amazed I could see most effects!
But overall, everything is just a double image blur, but of course I still go to these shows, since there is plenty to enjoy! But I find it interesting to know I am not the only one who can't see 3D.