meibomkörtlarna

Meibomkörtlarna, also known as tarsal glands, are a type of sebaceous gland located in the eyelids. There are approximately 20-30 meibomian glands in the upper eyelid and 15-20 in the lower eyelid, arranged in rows within the tarsal plate, a firm connective tissue that gives the eyelid its shape. These glands are responsible for producing and secreting meibum, an oily lipid layer that forms the outermost part of the tear film.

The primary function of meibum is to prevent rapid evaporation of the watery layer of the tear film, thereby maintaining ocular surface lubrication and comfort. This oily secretion also helps to create a smooth optical surface, contributing to clear vision. Meibomian gland dysfunction (MGD) is a common condition characterized by abnormalities in the glands, leading to insufficient or poor-quality meibum. This can result in a range of symptoms, including dry eyes, irritation, redness, and a gritty sensation. MGD can be caused by various factors, including aging, hormonal changes, certain medications, and underlying skin conditions. Treatment for MGD often involves eyelid hygiene practices, warm compresses, and artificial tears.