What Is Acanthamoeba Infection and How Is It Treated?

Written by Medicover Team and Medically Reviewed by Dr Manaswini Priya Varanasi , Ophthalmologists

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Acanthamoeba infection is a rare but serious condition caused by a microscopic organism called Acanthamoeba. This infection primarily affects the eyes, skin, or central nervous system.

Acanthamoeba can lead to severe health issues and complications, especially in individuals with weakened immune systems. It is essential to seek medical attention promptly if you suspect you have been exposed to Acanthamoeba to prevent potential health risks.

What are the Types of Acanthamoeba Infection?

Acanthamoeba infections can manifest in various ways, affecting different parts of the body and presenting with distinct symptoms.

Cutaneous Acanthamoeba Infection: A skin infection caused by Acanthamoeba entering through cuts or wounds.
Ocular Acanthamoeba Keratitis: An infection of the eye, often associated with contact lens use, that can lead to severe vision loss.
Granulomatous Amebic Encephalitis (GAE): A rare and severe infection affecting the brain and central nervous system, with high mortality rates.
Disseminated Acanthamoeba Infection: A systemic infection where the parasite spreads to multiple organs in the body, leading to serious complications.
Nasal Acanthamoeba Infection: A rare type of infection affecting the nasal passages, sinuses, and potentially spreading to the brain.

What are the Symptoms of Acanthamoeba Infection?

Acanthamoeba Infection can present with a variety of symptoms affecting the eyes, skin, or central nervous system.

Eye pain
Eye redness
Blurred vision
Sensitivity to light
Excessive tearing or discharge from the eye

What are the Causes of Acanthamoeba Infection?

Acanthamoeba infection is primarily caused by exposure to contaminated water sources, such as lakes, rivers, or improperly maintained swimming pools.

Contact lens wear
Contaminated water sources
Poorly maintained swimming pools
Soil
Poor hygiene practices
Compromised immune system

When to See a Doctor?

Acanthamoeba can cause severe eye pain or life-threatening brain inflammation. These infections can lead to permanent vision loss or neurological decline, severely impacting your quality of life and frequently requiring intensive hospital treatment to manage the aggressive spread of the parasite.

You should see a doctor if you have:

Blurred vision, light sensitivity, or a sensation of something in your eye.
Unusual eye redness or persistent pain that does not improve with drops.
Excessive tearing or discharge accompanies a cloudy corneal appearance.

Get medical help immediately if:

You experience sudden, severe headaches, fever, and a stiff neck.
You develop seizures, personality changes, or loss of bodily coordination.
There is a rapid, total loss of vision in one or both eyes.

These could be signs of a serious complication, such as GAE, which requires urgent care.

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How is Acanthamoeba Infection Diagnosed?

Acanthamoeba infection is typically diagnosed through a combination of clinical symptoms, medical history, and specific tests.

Corneal Scraping
Confocal Microscopy
PCR Testing
Culture Testing
Biopsy

What are the Treatment Options for Acanthamoeba Infection?

Acanthamoeba infection is generally treated through a combination of different approaches aimed at reducing the severity of the symptoms and eradicating the parasite.

Topical Medications: Eye drops containing specific antiamoebic agents are commonly prescribed to treat Acanthamoeba keratitis. These medications help to eliminate the amoebas in the eye.
Oral Medications: In severe cases, oral medications may be prescribed to target the infection internally and provide advanced treatment for Acanthamoeba Infection.
Surgical Intervention: In advanced stages of Acanthamoeba keratitis, surgical procedures like corneal transplantation may be necessary to remove the infected tissue and restore vision.
Management of Symptoms: Along with specific treatments, managing symptoms such as pain, inflammation, and sensitivity to light is crucial in providing relief and aiding the healing process.
Regular Follow-up Care: Close monitoring by healthcare professionals is essential to track the progress of treatment, adjust medications if needed, and ensure the infection is effectively controlled.

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How Can Acanthamoeba Infection Be Prevented?

To prevent Acanthamoeba infection, practice proper hygiene, especially if you wear contact lenses. Always clean and store lenses with sterile solution; avoid tap water, and never wear lenses while swimming or showering. Avoid exposure to contaminated water sources, such as stagnant lakes or hot tubs. If you have open wounds, keep them covered to prevent infection. Maintaining good eye and skin hygiene can significantly reduce the risk.

What are the Risk Factors for Acanthamoeba Infection?

Acanthamoeba infection risk factors include wearing contact lenses, using contaminated water for lens care, swimming or using hot tubs with lenses on, and having compromised immunity.

Contact lens use
Swimming in contaminated water
Use of improperly cleaned contact lenses
Microbial keratitis
Corneal trauma or injury

Frequently Asked Questions

1. How is Acanthamoeba Infection transmitted?

Acanthamoeba infection is transmitted through contact with contaminated water, soil, or air. It can enter the body through skin wounds, the respiratory system, or by improper contact lens hygiene. Using tap water for cleaning lenses, swimming with lenses, or exposure to stagnant water increases the risk. Proper hygiene and avoiding contaminated water sources can help prevent infection.

2. What foods support recovery from Acanthamoeba infection?

A diet rich in vitamins and antioxidants can help support recovery from Acanthamoeba infection. Foods high in vitamin C, such as citrus fruits and leafy greens, boost the immune system. Omega-3 fatty acids from fish, nuts, and seeds help reduce inflammation. Staying hydrated and consuming probiotic-rich foods like yoghurt can also aid in recovery by promoting overall health.

3. Can laser eye surgery prevent Acanthamoeba infection?

Laser eye surgery, such as LASIK, eliminates the need for contact lenses, reducing the risk of Acanthamoeba infection. However, it does not directly prevent infection since the organism can still enter through wounds or contaminated water. Proper eye hygiene and avoiding exposure to unclean water remain essential for reducing the risk of infection after surgery.

4. How do you get infected with Acanthamoeba?

Infection occurs when Acanthamoeba enters the body through the eyes, skin wounds, or inhalation. Contact lens users face the highest risk, especially if they use contaminated water for cleaning or wear lenses while swimming. Exposure to soil, dust, or stagnant water can also lead to infection. Practicing good hygiene and avoiding potential contamination sources can help prevent infection.

5. What happens if Acanthamoeba keratitis is left untreated?

If left untreated, Acanthamoeba keratitis can cause severe eye damage, leading to vision loss or blindness. The infection progressively destroys the corneal tissue, causing extreme pain, redness, and light sensitivity. In advanced cases, corneal transplant surgery may be needed. Early Diagnosis of Acanthamoeba Infection and prompt treatment are crucial to preventing complications and preserving vision.