The eyes are constantly lubricated by tears from the tear duct. This helps maintain the clarity of the vision and the comfort of the eyes. The tears can also fight any bacterial infections acting as a coating of protection for the eyes.

Dry eyes is when the tears are unable to lubricate and moisturise the eyes. Causes of dry eyes include imbalance of the tear-flow system, natural ageing process, possible side effects from certain drugs and some diseases can hinder the tear production process. When the eyes are not lubricated by the tears, symptoms including red eyes, itching, pain, irritation, blurred vision and light sensitivity may arise.

If you believe you may be suffering from dry eyes, you should consult your doctor or optometrist to confirm this and for further advice on what to do next.