What are the outer layers of the eye?

The outer layers of the eye consist of the sclera and the cornea. The sclera is the tough, white outer layer that provides structure and protection to the eye. It constitutes the majority of the eye’s outer surface and helps maintain its shape. The cornea, on the other hand, is the transparent front part of the eye that covers the iris and pupil. It plays a critical role in focusing light onto the retina.

Together, the sclera and cornea form a protective outer barrier and aid in the eye's optical functions, allowing light to enter while safeguarding the internal structures. This structural integrity is essential for maintaining overall visual health and performance. In contrast, other options include parts of the eye, such as the choroid and retina, but these are not classified as the outer layers.