Two cases of unilateral angle-closure glaucoma were accompanied by marked myopia and dramatic shallowing of the anterior chamber. Between attacks the anterior chambers were deep. The cause may be a spasm and swelling of the ciliary body.
Phelps CD. Angle-Closure Glaucoma Secondary to Ciliary Body Swelling. Arch Ophthalmol. 1974;92(4):287-290. doi:10.1001/archopht.1974.01010010297004