A chalazion is a chronic inflammation of which gland?

A chalazion is indeed a chronic inflammation of the Meibomian gland. This gland is located within the eyelids and plays a crucial role in the production of meibum, an oily substance that helps maintain the tear film's stability and prevent evaporation. When the Meibomian gland becomes obstructed, it can lead to the accumulation of oil, resulting in localized swelling and inflammation, which manifests as a chalazion.

This condition is chronic because the blockage typically does not resolve on its own, leading to a prolonged period of inflammation and the formation of a firm lump in the eyelid. Understanding the function and location of the Meibomian gland is essential in recognizing why this specific gland is involved in the formation of a chalazion compared to the other glands listed, which have different roles in eye health and function.