For many people, contact lenses provide an excellent means of vision correction that have become part and parcel of their daily lives.
People can take part in the majority of activities while wearing contacts, though those who do use them must also be aware of things that are inadvisable when wearing them, such as swimming.
That is the advice issued by Jennie Hurst, from Southampton, who made the mistake of leaving contact lenses in to go swimming, as she did not realise that they should not be worn while taking part in the activity.
The result was that she suffered corneal damage due to infection, which has significantly affected her eyesight.
She told the BBC: "I felt guilty that I had let it happen when actually I could have just taken my contacts out and saved everyone a lot of time and bother and myself a lot of pain.
"I have always been so careful with my contact lenses. I always remove them when sleeping and always use contact lens solution to wash them."
Ms Hurst said that her consultants were quite surprised that she had gone swimming wearing contacts and probably thought that she has been a bit lazy, whereas the truth is that she was not aware of the problem at all, and it did not even occur to her to take them out.
Commenting on the case, Parwez Hossain, the consultant ophthalmologist who treated Ms Hurst at Southampton General Hospital, told the BBC that contacts lens wearers need to be aware of the safety aspect of using the products, as well as the benefits.
"If you've been wearing contact lenses and you start developing irritation in the eye and sensitivity to the light which doesn't settle down after a few hours you need to go and see a doctor or optician," he commented.