What is the ocular structure that continues from the optic nerve?

The retina is the correct answer because it is a crucial component of the visual system located at the back of the eye and is directly connected to the optic nerve. This structure consists of a layer of light-sensitive photoreceptor cells, which play a vital role in converting light into neural signals that can be processed by the brain, enabling vision.

When light enters the eye, it passes through various structures before reaching the retina, where the photoreceptor cells are located. Upon stimulation by light, these cells generate electrical impulses that travel via the optic nerve to the visual centers in the brain. The optic nerve itself is a continuation of the retinal tissue, meaning that the retina directly connects to and is an integral part of the optic nerve system.

Other choices, while important components of the eye, do not serve this specific function. For instance, the lens is responsible for focusing light onto the retina, the ciliary body aids in the adjustment of the lens shape for focusing, and the cornea provides the primary refractive power of the eye but does not connect to the optic nerve. Understanding the relationship between these structures is essential in mastering the anatomy and function of the eye.