Abrupt onset of severe (usually unilateral) eye pain
Blurred vision
Halos around lights
Frontal or supraorbital headache
Nausea / vomiting / abdominal pain
Fixed, midposition pupil
Hazy cornea
Conjunctival injection most prominent at limbus (ciliary flush)
Rock-hard globe
Acute angle-closure glaucoma
Nontraumatic
Open-angle glaucoma
Acute angle-closure glaucoma^
Orbital cellulitis
Anterior uveitis
Orbital compartment syndrome
Conjunctivitis