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The Cup-to-disc Ratio Is Smaller in the Pseudotumor Cerebri Population Compared to Norms: Implications for Anterior Optic Neuropathies | Brooke Geddie; Emrah Altiparmak, MD; Eric Eggenberger, DO | A small cup:disc (C:D) ratio is a known 'risk factor' for anterior ischemic optic neuropathy (AION), a disease characterized by disc edema. The small cup:disc ratio in AION may be related to the pathophysiology as a marker of a 'crowded' optic nerve head with implications concerning blood supply. We... | 20040331_nanos_posters_066 |