The projection of the visual field upon the retina of the pigeon.

Co-ordinates in the visual field of the pigeon eye were located in the eye cup anatomically by marking the position of the trans-scleral image. The retinal horizon and vertical meridian at azimuths 0 deg (frontal field) and 90 deg (lateral field) were located. Approximately 18 deg of binocular field are available in frontal vision and the frontal meridian projects to temporal retina outside the red field. Spatial distributions of ganglion cells, displaced ganglion cells, and centrifugal terminals were located in the eye cup. Retinal magnification factors in the posterior pole and temporal periphery are close to 120 microns/deg.