Bipolar cells are a type of neuron found in the retina of the eye. They play a crucial role in the visual processing pathway by connecting photoreceptors, such as rods and cones, to ganglion cells. These cells help transmit visual signals from the light-sensitive cells to the brain, allowing us to perceive images. Bipolar cells are classified into two main types: ON and OFF bipolar cells. ON bipolar cells respond to increases in light, while OFF bipolar cells respond to decreases in light. This dual response system helps the visual system detect changes in light intensity, contributing to our ability to see in various lighting conditions.