Contact cleanliness has come under the microscope as more eye infections surface in contact lens wearers.

In a survey of more than 400 contact lens wearers, Cavanagh found that just 2 percent of them are following the rules for safe contact lens use. Chief among the sins is showering or swimming while wearing contacts, sleeping in them and using them longer than recommended before throwing them out.

With more and more people eschewing glasses for contacts the incidence of infections is on the rise and awareness is the best way to avoid illness.