What is dry eye syndrome?
According to the NHS, dry eye syndrome (DES), also known as keratoconjunctivitis sicca (KCS) is an eye condition characterised by the tear ducts in the eyes not making enough tears or when the tears that are produced dry out too quickly. There are many reasons why tear production can be affected, including hormones, environmental conditions, looking at the computer screen for too long, and as a side effect of certain medications.