The image below shows how ganglion cells map to different portions of the retina.
Crossed ganglion cells from the nasal portion of the retina are shown in blue. Together, they represent the temporal visual field or nasal retinal ganglion cells.
Uncrossed ganglion cells are shown in red. They form the temporal retinal nerve fibres which correspond to the nasal visual field.
As you walk through this course, note these important anatomical landmarks. Mapping these landmarks to retinal defects is crucial for understanding retinal pathologies and their associated visual field defects.