Contact lenses are a popular and convenient alternative to glasses for millions of people in the UK. However, for many, wearing contact lenses can lead to uncomfortable symptoms of dry eye syndrome. This condition occurs when the eyes do not produce enough tears or the tears evaporate too quickly, resulting in dryness, irritation, and discomfort.

Contact lenses rest directly on the tear film that covers the cornea—the clear, front part of the eye. The tear film is essential for maintaining eye health, comfort, and clear vision. It consists of three layers: an outer oily layer, a middle watery layer, and an inner mucus layer. The contact lens sits in the tear film and can disrupt its stability in several ways, leading to dry eye symptoms.