Could sinus congestion cause narrow angle closure glaucoma?

Sinus congestion. Will not cause angle glaucoma. In patients who have narrow anterior chamber angles (which would be diagnosed by an ophthalmologist), taking medications to treat a sinus infection could lead to an angle closure glaucoma attack. If you have narrow angles, you should avoid decongestants and anti-histamines until you are told by your ophthalmologist that it's ok to use them.