Final answer:
The cornea is made of clear tissue and bends light rays as they enter the eye. It is located at the front of the eye and acts as a protective layer. The retina contains the photoreceptor cells responsible for converting light into nerve impulses.
Step-by-step explanation:
The cornea is made of a clear tissue and it bends light rays as they enter the eye. It is located at the front of the eye and acts as a protective layer. The cornea, along with the lens, helps to focus light onto the retina, which contains the photoreceptor cells responsible for converting light into nerve impulses.