What role does the meibomian gland play in eye health?

The correct answer highlights the primary function of the meibomian gland, which is crucial for maintaining eye health. The meibomian glands are specialized sebaceous glands located within the eyelids. Their primary role is to produce an oily substance known as meibum. This oil forms the outer layer of the tear film, which is essential for preventing tear evaporation and ensuring that the eyes remain properly lubricated.

When the meibomian glands function well and produce adequate meibum, they help maintain a stable tear film that protects the cornea and keeps the eyes moist. This is vital for comfort and helps to prevent dry eye syndrome, which can lead to irritation, inflammation, and potential damage to the surface of the eye.

In contrast, other options refer to different functions of various structures in or around the eye. For example, while tears are produced by the lacrimal glands, filtering light is a function performed by the cornea and the lens, and the regulation of intraocular pressure is mainly managed by the aqueous humor and the drainage systems of the eye, primarily the trabecular meshwork and Schlemm's canal. Thus, the unique role of the meibomian gland in producing meibum is integral to overall