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- W2010393967 abstract "<h3>Objective:</h3> To assess the association of visual field, vertical cup-disc (VC/D) ratio, and vertical height of optic chiasm. <h3>Design:</h3> Case series. <h3>Setting:</h3> Outpatient eye clinic. <h3>Patients:</h3> Eighteen patients with low, normal, or elevated intraocular pressure, with or without visual field defects. <h3>Intervention:</h3> Measurement of visual field, VC/D ratio, and vertical height of optic chiasm. <h3>Main Outcome Measures:</h3> Association between VC/D ratio and visual field defects compared with association between vertical height of optic chiasm and visual field defects. <h3>Results:</h3> Visual field defects were graded as 0, 1 to 10, and 11 to 20 (from least to most severe). Group mean VC/D ratios were 0.47 (0), 0.55 (1-10), and 0.69 (11-20) for right eyes and 0.48(0), 0.57 (1-10), and 0.75 (11-20) for left eyes. The significance level for trend was<i>P</i>=.02 for right eyes and<i>P</i>=.006 for left eyes. Group mean chiasm heights were 3.5 (0), 2.9 (1-10), and 2.2 (11-20) mm for right eyes and 3.5 (0), 2.8 (1-10), and 2.2 (11-20) mm for left eyes. The significance level for trend was<i>P</i><.001 for right eyes and<i>P</i>=.002 for left eyes. To assess the simultaneous effects of VC/D ratio and chiasm height on the visual field defects groups, we used ordinal logistic regression models. Models with both variables implied that chiasm height was a stronger predictor of visual field defects group than VC/D ratio (for right eyes,<i>P</i>=.04 [VC/D ratio],<i>P</i>=.001 [chiasm height]; for left eyes,<i>P</i>=.11 [VC/D ratio],<i>P</i>=.005 [chiasm height]). <h3>Conclusions:</h3> When chiasm and VC/D ratio were analyzed in the same model, chiasm height was a stronger predictor of visual field defects. In advanced visual field defects, the optic chiasm is atrophic." @default.
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- W2010393967 date "1997-06-01" @default.
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- W2010393967 title "Association of Visual Field, Cup-Disc Ratio, and Magnetic Resonance Imaging of Optic Chiasm" @default.
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- W2010393967 doi "https://doi.org/10.1001/archopht.1997.01100150731006" @default.
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