Rods are specialized cells in the retina of the eye responsible for vision in low-light conditions. Unlike cones, which detect color, rods are highly sensitive to light and enable us to see in dim environments. There are approximately 120 million rods in the human retina, making them crucial for night vision and peripheral vision. They work by converting light into electrical signals, which are then processed by the brain to form images. Rods are more numerous than cones but do not detect fine detail or color. The ultimate function of rods is to provide the visual information necessary for navigating low-light settings and ensuring survival. If you’re interested, I can delve deeper into how rods function or their role in specific visual impairments.