Past 2 days I have a sinus headache, congestion, drainage, and ear " fullness". I have glaucoma, and r/eye is very red, puffy and draining. I am a 100% s/c vet, should I visit emergency?

Sinus and Glaucoma. You didn't say whether you have open or closed angle glaucoma. If you took certain meds to relieve your sinus symptoms, they can increase the pressure in your eye, given your glaucoma. Nevertheless, with your history, i would not take lightly your unilateral eye symptoms, even though acute sinus problems can cause eye puffiness and drainage. To be on the safe side, i would check it out.
Yes. The most concerning of your symptoms is your eye. That could be cellulitis and you don't want to fool around with it in that area.