Final answer:
The 3 main cell layers of the retina are the photoreceptor layer, bipolar cell layer, and retinal ganglion cell layer.
Step-by-step explanation:
The 3 main cell layers of the retina are the photoreceptor layer, the bipolar cell layer, and the retinal ganglion cell layer.
In the photoreceptor layer, light energy stimulates the rods and cones, which then change their membrane potential.
The change in membrane potential affects the amount of neurotransmitter released onto the bipolar cells in the outer synaptic layer, connecting them to the retinal ganglion cells in the inner synaptic layer.