Contact lens problems and irritation can be caused by:
Improper care or use of your lenses
Soft lenses are particularly delicate and should be cared for as recommended by the manufacturer. Failing to clean your lenses properly, letting them dry out, or not washing your hands before putting them in can result in lens discomfort and irritation.
If your contact lenses come into contact with make-up, perfume and hair products, this can also cause problems.
Your contact lenses should never be lent to anyone else, as they can carry bacteria.
Wearing contact lenses for too long
There are many different types of contact lens. Some can only be worn for a few hours, while others can be worn overnight. Wearing lenses for longer than recommended can cause irritation and discomfort. Wearing lenses that are worn out or past their use-by date can also cause problems, including infections from bacteria.
Always replace your lenses as soon as recommended by the manufacturer or your eye doctor.
Eye infections from contact lenses
Eye infections caused by the bacteria on contact lenses can potentially be quite serious. If left untreated, an eye infection could be sight-threatening. It’s important to see an eye doctor as soon as possible if you think you may have an eye infection.