Question

How does the eye convert light rays to a perceived image, and what are the principal structures involved in the process?

A) By focusing light on the optic nerve; principal structures are the lens and cornea
B) By bending light with the retina; principal structures are the ciliary body and iris
C) By refracting light with the cornea and lens; principal structures are the retina and optic nerve
D) By filtering light through the sclera; principal structures are the conjunctiva and vitreous humor

Answer 1

The eye converts light to a perceived image through the refraction of light by the cornea and lens, focusing it onto the retina. The retina's photoreceptors then translate the light into electrical signals sent to the brain by the optic nerve.

Step-by-step explanation:

The eye converts light rays to a perceived image primarily through a process called refraction. Refraction occurs as light passes through the cornea and lens, which act together as a single lens system that focuses the light onto the retina. The retina, located at the back of the eye, contains photoreceptor cells known as rods and cones that are responsible for sensing light and color, respectively. These photoreceptors convert the light into electrical signals which are then transmitted to the brain via the optic nerve. The brain processes these signals, allowing us to perceive the image.