What are the three main layers of the eye called?

The three main layers of the eye are indeed referred to as the Outer Layer, the Middle Layer, and the Inner Layer. This terminology is rooted in the anatomical understanding of the eye's structure.

The outer layer, also known as the fibrous tunic, includes the sclera and cornea, providing protection and maintaining the shape of the eye. The middle layer, or the vascular tunic, consists of the choroid, ciliary body, and iris, which play crucial roles in supplying blood to the eye and regulating light entry. Finally, the inner layer, known as the retina, contains the photoreceptors that convert light into neural signals, enabling vision.

The other options pertain to structures or classifications that are not relevant to the anatomy of the eye. For instance, epidermis, derma, and subcutaneous layer relate to skin anatomy rather than the eye. Medulla, cortex, and bulb do not correspond to layers of the eye but rather represent parts of the brain or the structure of some organs. Lastly, lipid, aqueous, and mucoid describe different types of substances often found in various bodily secretions, not layers of the eye. Therefore, the outer, middle, and inner layers are the correct classifications