Fig. 2.1

Gonioscopy photograph of occluded angle; no trabecular structures are visible.

Fig. 2.2

Gonioscopy photograph of open angle, showing trabecular meshwork and other structures.


Acute angle-closure glaucoma is an ocular emergency, as it has the potential for total visual loss from optic nerve damage within 24-36 hours.

Differential diagnosis

Neovascular glaucoma; glaucomatocyclitic crisis; disciform keratitis.


See Acute angle-closure glaucoma – management.

Acute angle-closure glaucoma – assessment