Two hundred daily lens wearers were randomised to either receive a storage case with or without a ‘no-water’ sticker. Both groups also received written information on how to look after contact lenses. At the start and after six weeks, participants completed a self-administered lens hygiene questionnaire.
There was also microbial analysis of used storage cases, collected at both study visits. Analysis showed the change in water-contact behaviour resulted in less storage case contamination over time.
Of the 200 participants, the researchers found that after six weeks, endotoxin levels reduced significantly in the test group (compared with the control group). Additionally, they found that ‘nowater’ lens case stickers improved overall water contact behaviours.
So a simple reminder of what to do, or not do can bring results.
The study result has been picked up at the International Standards Organisation (ISO). They commented , “this is an exciting development, as this simple and cost effective intervention can improve behaviour and lower water bourne case contaminants.”
The concept was devised by a patient with a severe eye infection, and has potential to save vision through a safety message.
The hope is that it becomes a standard printed warning on contact lens paraphernalia.