Patency of small laser iridotomy evaluated using anterior-segment optical coherence tomography.
We report the case of a patient with recurrent acute angle-closure glaucoma who had undergone a previous laser iridotomy. Because the initial iridotomy was small, patency could not be determined by slit-lamp examination. Therefore, anterior-segment optical coherence tomography was used to evaluate the patency. Cross-sectional images showed the presence of a membrane with an anterior bowing configuration at the base of the iridotomy, suggesting that recurrent pupillary block was the causative mechanism. A repeat laser iridotomy was performed, with a resultant decrease in the intraocular pressure and widening of the anterior chamber angle. Anterior-segment optical coherence tomography may be helpful to confirm the status of a laser iridotomy, especially when the iridotomy is small.
Department of Ophthalmology, Asahikawa Medical University, Asahikawa, Japan.
Seigo
S
Nakabayashi
Department of Ophthalmology, Asahikawa Medical University, Asahikawa, Japan.
Motofumi
M
Kawai
Department of Ophthalmology, Asahikawa Medical University, Asahikawa, Japan.
Toru
T
Yamaguchi
Department of Ophthalmology, Asahikawa Medical University, Asahikawa, Japan.
Akitoshi
A
Yoshida
acute angle-closure glaucoma; anterior-segment optical coherence tomography; laser iridotomy