Hikers, runners, sailing enthusiasts, skiers, white water rafters and swimmers are all among London Vision Clinic patients. The risks of using contact lenses in the water are well chronicled; and goggles fitted with lenses – while adding a humorous scene in the film Notting Hill – in reality offer only extremely limited help in the swimming pool. London Vision Clinic surgeon, Glenn Carp a keen swimmer recalls, before having his own sight problems corrected, the awkwardness of not being able to see the pool clock and being unable to check his length timings. (He had to peer at a special clock positioned specially at the end of his lane).