What is the function of the lacrimal glands?

The lacrimal glands play a vital role in maintaining the health and function of the eyes. Their primary function is to produce tears, which serve multiple purposes. One of the most important roles of tears is to provide lubrication for the eyes, which helps to prevent dryness and irritation. This lubrication is essential for comfortable vision and overall eye health.

In addition to lubrication, tears also contain various substances that protect the eye from infection and maintain a clear optical surface, allowing for unobstructed vision. The tears help wash away debris, microorganisms, and any foreign particles that may enter the eye, providing a critical defense mechanism. Therefore, the function of the lacrimal glands as producers of tears is central to both ocular comfort and protection.

While the other options mention functions related to the eye, they do not pertain specifically to the lacrimal glands. Eye movement control is governed by the extraocular muscles and cranial nerves. The cornea receives nutrients primarily from the aqueous humor and the tear film, not directly from the lacrimal glands. Finally, adjusting focus is the responsibility of the eye's lens and ciliary muscles, and is not a function linked to the lacrimal glands. This context clarifies why the correct answer highlights the essential