Location of<unk> , and common types of scotomas.<unk>  is marked with a dotted blue line at 25 degrees.<unk>  is the central 25° of the visual field from the fixation point, popularized scientifically by the Danish ophthalmologist Jannik Petersen<unk> .<unk>  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<unk> , typically in patients with open-angle glaucoma. Of particular note is the arcuate scotoma (also known as the<unk> s scotoma). It starts at the blind spot, arching over the macular<unk> , and ends as a horizontal line nasally. The arcuate scotoma does not cross the horizontal divide of the visual field.
Bjerrum's area
Kocher's point
McBurney's point
Dandy's point
Pauwel's angle
Bergmeister's papilla
Keen's point
Beevor's axiom