Abstract | PURPOSE: METHODS: Gonioscopy and ultrasound biomicroscopy (UBM) were performed pre-operatively, and at 1 year after clear lens extraction or trabeculectomy in PACG eyes. RESULTS: Fifty PACG eyes of 50 patients were included. Twenty-six eyes had clear lens extraction by phacoemulsification, while 24 eyes underwent trabeculectomy. The mean extent of synechial angle closure was significantly reduced from 272.3° ± 57.3° to 253.3° ± 70.5° (p = 0.007) by phacoemulsification, but it was only reduced from 285.0° ± 64.6° to 283.1° ± 55.5° (p = 0.32) by trabeculectomy. The mean angle-opening distance at 500 microns from sclera spur (AOD500) measured by UBM was significantly increased from 220.3 ± 93.8 microns to 388.9 ± 134.1 microns (p < 0.001) by clear lens extraction, but decreased from 220.9 ± 79.8 microns to 214.5 ± 70.2 microns (p = 0.11) by trabeculectomy. The mean anterior chamber depth (ACD) measured by UBM was significantly increased from 1,983.8 ± 176.8 microns to 3335.0 ± 174.2 microns (p < 0.001) by clear lens extraction, but decreased from 2,000.2 ± 214.5 microns to 1975.8 ± 218.2 microns (p = 0.001) by trabeculectomy. CONCLUSION: Compared to trabeculectomy, clear lens extraction resulted in a significant reduction in synechial angle closure, and an increase in anterior chamber angle width and anterior chamber depth in PACG eyes without cataract.
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Authors | Xiaofei Man, Noel C Y Chan, Nafees Baig, Yolanda Y Y Kwong, Dexter Y L Leung, Felix C H Li, Clement C Y Tham |
Journal | Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie
(Graefes Arch Clin Exp Ophthalmol)
Vol. 253
Issue 5
Pg. 773-8
(May 2015)
ISSN: 1435-702X [Electronic] Germany |
PMID | 25644619
(Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
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Topics |
- Aged
- Anterior Chamber
(pathology)
- Aqueous Humor
(physiology)
- Ciliary Body
(pathology)
- Cornea
(pathology)
- Female
- Glaucoma, Angle-Closure
(surgery)
- Humans
- Intraocular Pressure
(physiology)
- Iris
(pathology)
- Lens, Crystalline
(surgery)
- Male
- Middle Aged
- Phacoemulsification
(methods)
- Trabeculectomy
(methods)
- Visual Field Tests
- Visual Fields
(physiology)
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