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About: Bjerrum's area     Goto   Sponge   NotDistinct   Permalink

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Bjerrum's area is the central 25° of the visual field from the fixation point, popularized scientifically by the Danish ophthalmologist Jannik Petersen Bjerrum. Bjerrum believed that this central portion of the visual field was of far more often use than the perimeter of the visual field, since he had observed 90% of the early glaucomatous changes were within these 25°. Multiple types of scotomas form inside Bjerrum's area, typically in patients with open-angle glaucoma.