Contact lenses for dry eyes are lenses designed with materials and properties that can help ensure comfort when you experience a dry or irritated sensation. A dry sensation whilst wearing lenses can have various causes: your tear film may be producing less moisture, the composition of your tears may have changed, or environmental factors such as air conditioning, working at a computer screen or wind may be drying out the surface of your eyes.
Lenses designed for dry eyes often contain materials with a higher water content, such as hydrogel or silicone hydrogel with moisturising properties. Some lenses are treated with substances such as hyaluronic acid or polyvinylpyrrolidone (PVP), which can retain moisture for longer. Oxygen permeability also plays a role: silicone hydrogel lenses allow more oxygen to reach the cornea, which can contribute to a healthier eye surface and reduced dryness.
As well as the lens material, the replacement frequency is also important. Daily disposable lenses are fitted fresh every day and accumulate fewer protein deposits, which can improve comfort. Monthly lenses require careful cleaning and a suitable lens solution to minimise dryness and irritation.