Dry eye syndrome (keratoconjunctivitis sicca) is a chronic condition that can damage the cornea. It occurs when the eye’s meibomian glands stop working properly.
The fine layer of moisture on the surface of your eye protects sensitive tissues, lubricates eye movement and promotes clarity of vision. This layer is actually comprised of water, oil and mucus, and a deficiency in any of these three can lead to dry eye. The oil is secreted by the meibomian glands, and its purpose is to keep tears from evaporating quickly. When the function of these glands is interrupted, the result is evaporative dry eye. Symptoms may include pain or a burning sensation in the eyes, itchiness, redness, light sensitivity and blurry vision.