Well, some mydriatics, i think tropicamide is one of them, may not well if you have very heavily pigmented irides, as some of the drug binds to the melanin of the irides. I would't have expected this to be a big problem if you were using tropicamide 1% though?
Too much of a mydriatic will not cause miosis as far as i know.
Also if your pupils are dilated, i would have thought that would make it look like you were on drugs as cocaine has that effect and im sure was used as a mydriatic back in the day.
You should be under the ongoing care of a Eye MD and hopefully have seen a Uveitis Eye MD in consult. You should be going in frequently every several months to monitor your condition. You should not be treating yourself.
You should direct your questions to the Eye MD that provides your care.
JCH III MD