UrgentCornea
Acanthamoeba Keratitis
A rare but serious cornea infection risk linked with contact lenses and water exposure.
What is it?
Acanthamoeba keratitis is a rare but serious corneal infection caused by a microscopic organism found in water and soil. It is strongly linked to contact lens use, particularly swimming or showering while wearing lenses.
Common symptoms
- Severe eye pain disproportionate to clinical signs
- Redness
- Blurred vision
- Sensitivity to light
- Watery discharge
Risk factors
- Contact lens wear, especially with tap water exposure
- Swimming with lenses in
- Poor lens hygiene
Prevention tips
- Avoid exposing contact lenses to tap water
- Remove contact lenses before swimming, showering, or using hot tubs
- Maintain strict contact lens hygiene and replace lenses as recommended
- Use only sterile contact lens solutions and avoid homemade solutions
- Seek urgent ophthalmic care for a painful red eye while wearing contact lenses
Treatment overview
Intensive topical antiseptic drops (polyhexamethylene biguanide and propamidine) over many months are required. Early diagnosis is crucial for a better outcome.
Seek urgent care if you notice
- Severe eye pain, especially in contact lens wearers
- Reduced vision
- Persistent redness or marked light sensitivity
- Symptoms not improving despite treatment
Related eye care tips
Have questions about your eyes?
This information is general education and does not replace a professional eye examination. If you are worried about your eyes, book an appointment.