Retina - GCSE Biology Definition

The retina is a thin layer of tissue located at the back of the eye that plays a crucial role in vision. It contains special cells called photoreceptors, which are sensitive to light. When light enters the eye, these photoreceptor cells detect it and convert it into electrical signals. These signals are then sent to the brain via the optic nerve, allowing us to see. The retina is essential for capturing details like colour and brightness, helping us interpret the world around us. Understanding how the retina works is an important part of studying the eye in GCSE Biology.