What is Dry Eye Syndrome?
Dry eye syndrome occurs when there is a disturbance of the tear film on the front of the eye. Usually the tears are poor quality, causing them to evaporate rapidly. This results in the front of the eye becoming dry and irritated. Occasionally the lacrimal gland may be dysfunctional and insufficient normal tears are produced.
Dry eye is more common over the age of 50. Some conditions such as fibromyalgia and Irritable Bowel Syndrome are associated with dry eye symptoms.
Other day to day activities such as sitting in a draft directly under an air conditioning unit or staring at a computer or phone screen for a long time without a break, can bring on dry eye symptoms. Several prescription medicines can provoke or exacerbate dry eye but it is unwise to stop them without first discussing this with the prescribing doctor.