Dry eye is common, studies estimate that up to 30% of people may experience it at some point in their life. It is more prevalent in people over 60 - particularly women.
Dry eye syndrome, or dry eye disease, occurs when the eyes do not make enough tears, or the tears evaporate too quickly as the oil glands are blocked or abnormal.
This leads to the eyes drying out and becoming inflamed (red and swollen) and irritated.
The condition is also known as keratoconjunctivitis sicca.
Dry eye is not normally serious and although there is no cure most people can be kept comfortable using eye drops regularly.
If however the main problem is a blockage of the oil secreting glands, then the condition is called blepharitis, meibomian gland dysfunction or lid margin disease.(link to Blephacura)