The RF is the change in resting membrane potential of the RGC produced by light.

The RF is the cell which is responsible for the direct pathway from rods to RGCs.

The RF is made up of centre and surround regions which produce opposite effects on activity in the RGC.

The RF is made up of horizontal and amacrine regions which produce opposite effects on RGC activity.

The RF represents the area of the retina which excites the RGC.