DO stands for which?
Doc of Opthamology or Doc of Osteopathy?
Honestly, rather than doc hop, I'd go back and persist and articulate more clearly my complaints..... Make this doc put that old gray matter to work and make that doc WANT to for you!
Allergies often cause gunk build ups [I've got them, and know they can aggravate life big-time!] Getting the Gunk OUT any way you can safely [w/minimum of drugs] is ideal. Have you ever tried a sinus steam inhaler or the like? I'm not at that point yet, but am considering it.
As long as the gunk is clear or white and not deliteful colors of green you are doing OK -no infections or the like. If your eyes are dry, is it because something in that whole 'system' isn't working rite or is it something distinct? GP should send you to a eye, ear, nose and throat kind of specialist [they are becoming rare tho] to have a whole look-see. Worth a shot, at least?
's - j