Health conditions

Acanthamoeba and contact lens use

Acanthamoeba is a form of microscopic amoeba (single-celled organism) that lives in the environment. Acanthamoeba can be found in dust, soil, seawater, freshwater (including rivers, lakes, unchlorinated pools and farm dams), tap water, bottled water, and chlorinated spas and swimming pools.

Acanthamoeba can exist in two different life forms:

  • an infective (feeding or trophozoite) phase
  • a dormant cyst phase.

Acanthamoeba is resistant to disinfection with chlorine, so it can survive in chlorinated tap water, spas and swimming pools.

Is Acanthamoeba a health risk?
What is Acanthamoebic keratitis?
How is Acanthamoebic keratitis diagnosed?
How is Acanthamoebic keratitis treated?
How can I prevent getting Acanthamoebic keratitis?

Where to get help

Remember

  • Contact lenses are the most common risk factor for Acanthamoebic eye infection, so careful hygiene in their use and storage is essential.
  • Early detection is difficult, but essential for effective treatment.
  • If you suspect you or your child has an Acanthamoebic eye infection, it is essential to seek referral to an eye doctor immediately from your usual doctor or eye care provider.

More information

Water Unit
Environmental Health Directorate
Department of Health WA
PO Box 8172
Perth Business Centre WA 6849

Phone: (08) 9222 2000
Email: ehinfo@health.wa.gov.a


Acknowledgements

Public Health


This publication is provided for education and information purposes only. It is not a substitute for professional medical care. Information about a therapy, service, product or treatment does not imply endorsement and is not intended to replace advice from your healthcare professional. Readers should note that over time currency and completeness of the information may change. All users should seek advice from a qualified healthcare professional for a diagnosis and answers to their medical questions.

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