No, I don't think it would be dangerous, as Plaquenil hasn't ever been associated with any kind of eye pressure side effects. Now would Plaquenil be indicated to use with other eye medications? No idea.
Best route? Ask your ophthalmologist!!
-------------------Plaquenil and Your Eyes
Here is an eye test that is easy for all of us to do online, without going to the doctor right away. Scroll down after you go to this site until a graph shows up with a dot in the center. Look at the dot with one eye at a time, and if the lines change, then you might need to see the doctor. Instructions & more information is available on the page. Check Your Eyes