الفهرس يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
Background: Glaucoma is defined as a disturbance of the structural or functional integrity of the optic nerve. Gonioscopy is considered the current gold-standard method for assessment of anterior chamber angle configuration. Anterior segment Optical coherence tomography (AS-OCT) is a non-contact, non-invasive technique that is quick and easy to use. This technique allows objective and qualitative evaluation of anterior chamber angle. This study was designed to compare the diagnostic performance of AS-OCT and gonioscopy in assessing the anterior chamber angle (ACA) in primary glaucoma. Methods: This is a cross sectional observational study that included patients with a diagnosis of: primary open angle glaucoma (POAG), primary angle closure suspect (PACS), primary angle closure (PAC), and primary angle closure glaucoma (PACG). All patients underwent a full ophthalmic examination. Gonioscopy was done using a Volk Magna view goniolens and Volk 4 mirror goniolens, the ACA in each quadrant was graded using the Shaffer grading system by single examiner masked to AS-OCT finding. Assessment of the ACA was done by Spectral domain AS-OCT. Results: This study was carried out on 100 eyes of 51 patients. A total of 19 (37.3%) patients were males and 32 (62.7%) patients were females. The mean age was 54.68 ± 8.23 years old. AS-OCT identified more closed anterior chamber angle than gonioscopy, especially in the superior quadrant 39%, and in the inferior quadrant 24%. The highest rates of closed anterior chamber angle on gonioscopy were observed in the superior quadrant 27%, and in the nasal quadrant 20%. The total agreement between both techniques was good (p < 0.001, k = 0.625). Conclusion: The highest rates of closed angles on gonioscopy and Spectral domain AS-OCT images were observed in the superior quadrant. AS-OCT tended to detect more closed anterior chamber angles than gonioscopy, particularly in the superior and inferior quadrants. The overall agreement between Spectral domain AS-OCT and gonioscopy was good