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      YH: contact lens wearers watch out

      {}{}{}{} How clean are your contact lens?{}{}{}{} A new study finds bacteria that can cause serious eye infections are able to survive longer in contact lens cleaning solution than previously known.{}{}{}{} Researchers looked at different strains of bacteria that can cause an inflammation and ulceration of the cornea which can cause vision loss.{}{}{} Most of the strains were killed within 10 minutes after being placed in the contact lens solution. {}{}{} However, one strain of bacteria -- which causes more severe cases of keratitis with a longer healing time -- survived in the solution for more than four hours.

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