Dry Eyes & Your Tear Film
Dry eyes predominantly affects the stability your tear film. Your tear film is responsible for providing your eyes with the hydration and comfort you need to enjoy your vision. However, some conditions can affect your tear film’s integrity, causing to dry eye symptoms.
The tear film is made of 3 distinct layers:
Sandwiched between the mucus and lipid layer is water, scientifically known as the aqueous layer. Water is essential for keeping your eyes hydrated while also washing away foreign particles on the surface of your eye. The lacrimal glands are responsible for producing this layer and are located just above your eyelid area.
Lipids, or oils, make up the outermost layer of the tear film. They help seal in the rest of the layers and prevent them from evaporating. This layer is produced by meibomian glands located around the edges of your eyelid. Still, some medical conditions prevent the production of a stable lipid layer, leading to dry eye symptoms.