Clinical and Anterior Segment Anatomical Features in Primary Angle Closure Subgroups Based on Configurations of Iris Root Insertion.
10.3341/kjo.2016.30.3.206
- Author:
Ji Wook HONG
1
;
Sung Cheol YUN
;
Kyung Rim SUNG
;
Jong Eun LEE
Author Information
1. Department of Ophthalmology, University of Ulsan College of Medicine, Seoul, Korea. sungeye@gmail.com
- Publication Type:Original Article
- Keywords:
Anterior segment optical coherence tomography;
Anterior segment parameters;
Iris root insertion;
Primary angle closure
- MeSH:
Anterior Eye Segment/*diagnostic imaging;
Female;
Glaucoma, Angle-Closure/diagnosis/physiopathology/*surgery;
Gonioscopy;
Humans;
*Intraocular Pressure;
Iridectomy/*methods;
Iris/diagnostic imaging/*surgery;
Lens, Crystalline/diagnostic imaging;
Male;
Middle Aged;
Prospective Studies;
Tomography, Optical Coherence/*methods
- From:Korean Journal of Ophthalmology
2016;30(3):206-213
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: To compare the clinical and anterior segment anatomical features in primary angle closure sub-groups based on configurations of iris root insertion. METHODS: Primary angle closure patients were imaged using anterior segment optical coherence tomography. Anterior chamber depth, iris curvature, iris thickness (IT) at the scleral spur and 500, 750, and 1,500 µm from the scleral spur (IT(0), IT(500), IT(750), and IT(1500)), lens vault, iris area, angle opening distance (AOD(500)), angle recess area (ARA(750)), and trabecular iris space area (TISA(750)) were measured. Iris root insertion was categorized into a non-basal insertion group (NBG) and basal insertion group (BG). RESULTS: In total, 43 eyes of 39 participants belonged to the NBG and 89 eyes of 53 participants to the BG. The mean age of participants was greater in the NBG than the BG (62.7 ± 5.7 vs. 59.8 ± 7.3 years, p = 0.043), and the baseline intraocular pressure was higher in the BG than the NBG (16.4 ± 4.4 vs. 14.9 ± 3.3 mmHg, p = 0.037). The BG showed a greater IT(0) (0.265 ± 0.04 vs. 0.214 ± 0.03 mm, p < 0.001) and iris area (1.59 ± 0.24 vs. 1.52 ± 0.27 mm2, p = 0.045), lower ARA(750) (0.112 ± 0.08 vs. 0.154 ± 0.08 mm2, p = 0.017) and AOD(500) (0.165 ± 0.07 vs. 0.202 ± 0.08 mm, p = 0.014) compared to the NBG. CONCLUSIONS: The BG had a narrower anterior chamber angle, thicker peripheral iris, and higher pretreatment intraocular pressure.
