Any neuron that participates in sending impulses from receptors to CNS are referred as sensory neurons in most textbooks. But I often see bipolar neurons (which according to the above definition should be sensory neurons) being called interneurons. 

So what are sensory neurons? Are all the following retinal neurons sensory?

**Rods/Cones, bipolar neurons, amacrine cells, horizontal cells, neurons of the optic nerve(ganglionic neurons).**

And, as soon as the neurons of optic nerve terminate in optic lobe, then are all the neurons in the brain connected to it called interneurons?