To present a case of acute angle-closure glaucoma in a nanophthalmos patient.

A 28-year-old woman visited the hospital for a sudden pain in the left eye, she had a small orbital bone and narrow palpebral fissurea in both eyes. Her intraocular pressure (IOP) was 58 mmHg in the left eye. The slit lamp examination showed shallow anterior chambers in both eyes, and the gonioscopic examination showed a closed angle in the left eye. The diameters of the corneas were 11 mm , and the axial lengths were 19.7 mm in the right eye and 19.6 mm in the left eye. The depths of the anterior chambers were 1.51 mm in the right eye and 1.82 mm in the left eye. The disease was diagnosed as acute angle-closure glaucoma in the left eye of the patient with nanophthalmos, and thus the IOP of the left eye was lowered using ophthalmic drugs and medications. Laser iridotomy was performed on both eyes.

For around a year of follow-up after laser iridotomy, complications such as the rise of intraocular pressure and choroidal effusion were not observed. This suggests that laser iridotomy can be an effective treatment for acute angle-closure glaucoma accompanying nanophthalmos.