Skip to content

    Eye Health Center

    Font Size
    A
    A
    A

    Bacteria in Contact Lens Solution

    Study suggests manufacturers test for all strains of P. aeruginosa to prevent infection

    WebMD News from HealthDay

    By Robert Preidt

    HealthDay Reporter

    THURSDAY, April 17, 2014 (HealthDay News) -- Bacteria that can cause serious eye infections are able to survive longer in contact lens cleaning solution than previously known, a new study finds.

    Researchers looked at different strains of Pseudomonas aeruginosa, which can cause microbial keratitis. This is an inflammation and ulceration of the cornea that can cause vision loss.

    The investigators tested nine strains of P. aeruginosa gathered from hospital patients in Britain and compared them to P. aeruginosa strain 9027, which is the standard one used in tests by makers of contact lens disinfectant solutions.

    Most of the strains were killed within 10 minutes after being placed in the contact lens solution, a result comparable to strain 9027. However, strain 39016 -- which causes more severe cases of keratitis with a longer healing time -- survived in the solution for more than four hours.

    The findings, scheduled for presentation Wednesday at a Society for General Microbiology meeting in Liverpool, England, suggest that tests of contact lens solutions should determine if they can kill all P. aeruginosa strains, the University of Liverpool researchers said.

    "Microbial keratitis can be devastating for a patient -- it is important that the risk of developing this condition is reduced in contact lens wearers by improving contact lens disinfectant solutions," study leader Craig Winstanley said in a society news release.

    Because this study was presented at a medical meeting, it should be viewed as preliminary until published in a peer-reviewed journal.

    Each year in the United Kingdom, there are about 6,000 cases of microbial keratitis, the news release noted.

    Today on WebMD

    Woman holding tissue to reddened eye
    Learn about causes, symptoms, and treatments.
    eye
    Simple annoyance or the sign of a problem?
     
    red eyes
    Symptoms, triggers, and treatments.
    blue eye with contact lens
    Tips for wearing and caring.
     
    Understanding Stye
    Article
    human eye
    Article
     
    eye
    Video
    eye exam timing
    Video
     
    vision test
    Tool
    is vision correction surgery for you
    Article
     
    high tech contacts
    Article
    eye drop
    Article