Answer:
The cornea is shaped like a dome and bends light to help the eye focus. ... When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals. These electrical signals travel from the retina through the optic nerve to the brain. Unlike light waves, which can travel in a vacuum, sound waves are carried within mediums such as air, water, or metal, and it is the changes in pressure associated with these mediums that the ear detects. As with light waves, we detect both the wavelength and the amplitude of sound waves.
Step-by-step explanation: