Optics explains how the eye perceives light from "summary" of Physics of the Human Body by Richard P. McCall
The field of optics plays a key role in understanding how the eye perceives light. When light enters the eye, it passes through the cornea, which is the transparent outer covering of the eye. The cornea's curved shape helps to bend the light rays and focus them onto the lens located behind it. The lens further refracts the light rays to ensure that they converge onto the retina, which is a light-sensitive layer of tissue at the back of the eye. The retina contains cells called photoreceptors, which are responsible for converting light energy into electrical sign...
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