Name the three layers of the tear film.

The three layers of the tear film are accurately identified as the lipid layer, aqueous layer, and mucin layer. Each layer plays a crucial role in the overall function and stability of the tear film.

The lipid layer, which is the outermost layer, helps reduce evaporation of the underlying aqueous layer. It provides a smooth surface for the tear film and contributes to the optical clarity of the tear film.

The aqueous layer is the middle component and is the thickest of the three layers. It is primarily responsible for delivering moisture, oxygen, and nutrients to the cornea while also containing antimicrobial agents that protect the eye from infections.

The mucin layer is the innermost layer that interacts with the epithelial cells of the cornea. It helps spread the aqueous layer evenly over the surface of the eye and ensures that the tear film has adequate adherence to the ocular surface.

This combination of layers is essential for maintaining a healthy ocular surface, supporting the function of the eyes, and ensuring clear vision.