What Is Dry Eye Disease?
Dry eye disease is a group of eye conditions with varying symptoms, caused by a lack of a good-quality tear film. This condition results in extreme dryness, along with red and burning eyes.
The tear film consists of 3 layers. Each layer has a function in keeping the eyes bacteria-free and hydrated.
- Outer oily layer: Helps slow down evaporation and smooth the eye’s surface.
- Middle watery layer: Hydrates the eye and channels nutrients to their proper location.
- Inner mucous layer: Helps tears adhere to the eyeball.
Imbalanced tears cannot provide the correct amount of lubrication to keep the eyes hydrated and comfortable, which can result in dry eye disease.