Describe the cornea as a transparent outer region that refracts light entering the eye.

In the subtopic The eye (biology only), this learning objective focuses on describe the cornea as a transparent outer region that refracts light entering the eye. Within The human nervous system, students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include cornea and eye. cornea means the transparent outer region of the eye that refracts light entering the eye. Avoid students often describe the cornea only as a protective layer without mentioning its role in light refraction; instead emphasize that the cornea is not only a protective outer layer but also a transparent region that refracts light entering the eye, which is crucial for focusing images on the retina. For exam answers, remember that the cornea is the transparent outer layer of the eye that refracts light. Visualize its position and function during light entry.