Health experts have warned that sleeping with contact lenses on and rinsing them with tap water could increase the risk of a number of eye ailments including blindness.
Speaking to the Daily Mail, Dr Simon Kilvington, a microbiologist from the University of Leicester, said that the number of eye infections caused due to bacteria pseudomonas and single celled acanthamoeba has been on the rise in Britain with over 50 new cases being reported every year.
Both the organisms are found in tap water and hard water and Dr Kilvington said that people should not rinse their lenses in tap water and instead should use sterile lens cleaning solution.
"Pseudomonas and acanthamoeba occur naturally in the environment, but particularly in bathrooms. Rinsing or storing your lenses in tap water really can get you in lot of trouble. In fact, bathrooms are not the best places to put in your contact lenses at all. And you should always use sterile lens-cleaning solution", he said.