Fig. 94. A drawing created by a patient with both positive and negative pseudophakic dysphotopsia. Because they are perceived centrally, the ring and rays around a light source can be drawn centrally in the illustration. But the patient is unable to draw the concave temporal dark shadow because it is so far peripheral that he cannot create a rendition showing it in his visual field on a piece of paper held in front of him because that sheet of paper is actually too central to the perception, which is more located in his far temporal field near his temporal orbit. (Courtesy of James A. Davison, MD, Wolfe Eye Clinic, Marshalltown, IA.)