ArticleChonnam medical journal2026
Structural Comparison of the Optic Nerve Head Based on Visual Prognosis after Acute Primary Angle Closure.
Article in Chonnam medical journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
To compare optic nerve head (ONH) and peripapillary structural OCT parameters between eyes with and without visual field (VF) defects one year after an episode of acute primary angle closure (APAC) in a cohort treated uniformly treated with early clear-lens extraction. Forty-seven eyes of 47 patients with a history of APAC episode who underwent early clear-lens extraction at Chonnam National University Hospital were retrospectively reviewed. Spectral-domain optical coherence tomography (SD-OCT) performed one year after the episode was used to assess Bruch's membrane opening-minimum rim width (BMO-MRW), retinal nerve fiber layer (RNFL) thickness, lamina cribrosa (LC) thickness and depth, and parapapillary atrophy (PPA) subdivided into PPA+BM and PPA-BM. Patients were classified according to the presence or absence of VF defects. At one year, 23 eyes (48.9%) had variable degrees of visual field (VF) defects. Compared with eyes with normal VF, the VF-defect group showed significantly thinner global BMO-MRW (p<0.001) and peripapillary RNFL (p<0.001), reduced LC thickness (p<0.001), shallower LC depth (p=0.028), and a wider PPA+BM (p<0.001). APAC patients who underwent early lens extraction may develop residual VF defect despite normalization of IOP. These defects were associated with structural damage in the rim, RNFL, LC, and PPA+BM as detected by SD-OCT. Comprehensive OCT analysis may help identify patients at risk of long-term functional sequelae after APAC.
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