One of the more subtle features of retinal topography is the presence of a weak visual streak along the horizontal meridian. The visual streak is an anatomical feature of retinas from many different species in which cell density is slightly higher than in neighboring areas just above or just below the horizon. This slide shows measurements of resolution acuity using the sampling limited task of orientation identification at 10 different meridia along a circle of constant eccentricity.
Resolution is clearly higher on the nasal side of the retina, as predicted anatomically.
Kevin Haggerty, Indiana University. This slide show was automatically converted to web pages by the WWWave.