What is the primary function of the lacrimal gland?

The primary function of the lacrimal gland is to produce tears. The lacrimal glands are located in the upper outer region of each orbit and are responsible for secreting the aqueous layer of the tear film. This film is crucial for maintaining corneal health, providing moisture, and offering lubrication to the surface of the eye. Tears also contain enzymes that help prevent infection and wash away foreign particles.

Understanding the role of the lacrimal gland in tear production is important in the context of eye health, as insufficient tear production can lead to dry eye conditions and increase the risk of corneal damage. The other options relate to aspects of the eye's function and health, but they do not encapsulate the primary role of the lacrimal gland itself, which is solely focused on the production of tears.