Dry eye is a disease of the tears and the surface of the eye that causes symptoms of discomfort, visual disturbance, and tear film instability with potential damage to the ocular surface.
In recent years, the cases of dry eye have sharply increased, in the face of the deterioration of our living conditions (pollution, air conditioning, etc.). Today, nearly a third of the adult population is affected.
In this case, the lacrimal gland is functioning properly, but the tears evaporate too quickly due to an altered lipid layer.
The alteration of the lipid layer is usually caused by :
The lacrimal gland does not produce enough of the water component of tears to keep the surface of the eye healthy. This may be related to aging or caused by a disease (Gougerot Sjögren Syndrome), medication, or a blocked tear duct.
Lipid layer intact
Lipid layer altered