Before revision: A visual description of the sites of different types of scotomas on the retina .
After revision: alt=Graphic detailing the location on the visual field of Jannik Bjerrum's area, as well as several other types of scotomas - including the paracentral scotoma, the central scotoma, seidels scotoma, bjerrums scotoma and the centrocecal scotoma.|300x300px|Location of Bjerrum's area, and common types of scotomas in this area .