The lens system of human eye forms an image on a light sensitive screen, which is called as :

The human eye acts like a camera. Its lens system forms an image on a light-sensitive screen called the retina. The retina is a delicate membrane containing a vast number of light-sensitive cells (rods and cones) which get activated upon illumination and generate electrical signals. These signals are then sent to the brain via the optic nerves. While the provided text for 'Chemical Reactions and Equations' mentions protecting the eyes during the burning of magnesium ribbon (Activity 1.1), the specific anatomical term for the light-sensitive screen is found in the NCERT chapter on the Human Eye.