Basaltränensekretionen

Basaltränensekretion refers to the continuous, minimal production of tears by the lacrimal glands that serves to lubricate and protect the surface of the eye. This basal secretion is essential for maintaining the health and comfort of the cornea and conjunctiva. It forms a thin tear film that keeps the ocular surface moist, aids in the removal of small debris, and provides a smooth surface for clear vision.

The composition of basal tears is primarily water, with dissolved electrolytes, proteins, lipids, and mucins. These components work together to create a stable tear film with distinct layers. The lipid layer, produced by the meibomian glands, reduces evaporation, while the aqueous layer from the lacrimal glands provides moisture, and the mucin layer, secreted by goblet cells, helps the tear film adhere to the ocular surface.

Unlike reflex tearing, which is triggered by irritants or strong emotions and involves a significant increase in tear production, basal tränensekretion is a constant, subconscious process. Disruptions to this normal secretion can lead to dry eye symptoms, such as burning, stinging, grittiness, and blurred vision. Factors like aging, certain medications, environmental conditions, and medical conditions can affect the volume and quality of basal tränensekretion.