title: Ultrasound biomicroscopic dimensions of the anterior chamber in angle-closure glaucoma patients.
abstract: In order to evaluate the morphologic types of appositional angle-closure glaucoma, biometric measurements were made in angle-closure glaucoma patients using Ultrasound biomicroscopy (UBM). Twenty-six patients with primary angle-closure glaucoma and 21 cataract patients with as a control group were examined. The angle-closure glaucomatous eyes were classified as type B in which the angle closure started at the bottom of the angle and type S in which the angle closure occurred in the vicinity of Schwalbe's line. The trabecular-ciliary process distance (TCPD, type B; 873.20+/-86.77 microm, type S; 832.52+/-82.96 microm, control; 1233.50+/-73.01 microm, p = 0.000) and the angle opening distance (AOD500, type B; 89.75+/-63.27 microm, type S; 88.85+/-72.95 microm, control; 304.40+/-104.30 microm, p = 0.000) were significantly shorter in patients with angle closure vice control group. No significant difference were noted in the three groups of patients in regards to iris thickness or ciliary process-iris angle. In this study, we have demonstrated that there are two types of appositional angle-closure and have shown the forward rotation of the ciliary process without changes of the ciliary process-iris angle in cases of angle-closure glaucoma.
authors.affiliation: Department of Ophthalmology, Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Korea.
authors.forename: Hyung Jin
authors.initials: HJ
authors.lastname: Cho
authors.forename: Je Moon
authors.initials: JM
authors.lastname: Woo
authors.forename: Kun Jin
authors.initials: KJ
authors.lastname: Yang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000000981:diagnostic imaging*; D005260:Female; D015812:Glaucoma, Angle-Closure / Q000000981:diagnostic imaging*; D006068:Gonioscopy / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D014463:Ultrasonography; D014894:Weights and Measures