My wife suddenly felt pressure behind her eyes like a sinus infection and het vision went blurry. doctor we saw had no ideas what it could be?

Pressure: There are many possible causes including migraine headache, orbital cellulitis, retinal bleeding, optic neuropathy, ocular infection, trauma, and ocular malignancy. If her symptoms persist, she should see an ophthalmologist soon! if her vision goes black or half black, she needs to go to the emergency room.

Need MD evaluation : Can be a number of things. 1) allergies are bad this year and this could be sinusitis, abscess (fever?). The eye is surrounded by sinuses 2) glaucoma can cause pressure sensation 3) has her weight changed dramatically recently? With idiopathic intracranial hypertension or pseudotumor of the orbit, visual obscurations can occur. 4) postural? Both eyes? Can be a varix, cyst, lymphatic, aneurys.