January 9, 2019

Acanthamoeba keratitis (AK)

Acanthamoeba keratitis is a rare but serious eye infection of the cornea (clear ‘window’ at the front of the eye) that is painful and becomes inflamed and sight-threatening.

The infection is caused by a microscopic organism called acanthamoeba, which is common in nature and is usually found in lakes, oceans, rivers and other bodies of water such as tap water, swimming pools, hot tubs, soil and air.

Information on Acanthamoeba keratitis


In the UK, AK is mostly common in people who wear contact lenses, but anyone with a corneal injury is susceptible to developing the infection. About 1 in 30,000 contact lens wearers become infected.

Using tap water to clean or store contact lenses or having poor contact lens hygiene increases the risk of infection. Examples of poor lens hygiene are not using disinfection solutions properly, reusing the solution in the contact lens case, failing to empty and dry the contact lens case after use and storing lenses in water overnight.

Wearing contact lenses when swimming or taking a shower also increases risk. So, does putting lenses in with wet hands from tap water.


Acanthamoeba keratitis is very painful for most people but it’s possible to have no pain at all. Other symptoms include red eyes that feel irritated or like they have something in them. Some people will get blurred or poor vision, while others may become sensitive to light and find it painful or uncomfortable.

If you ever experience any of these types of symptoms, you need to make sure to contact your eye doctor. Remember that acanthamoeba keratitis is sometimes difficult for your eye doctor to diagnose at first, because its symptoms are similar to pink eye symptoms and those of other eye infections.

Diagnosis of keratitis often occurs once it is determined that the condition is resistant to antibiotics used to manage other infections. A "ring-like" ulceration of your corneal tissue may also occur.

How is AK diagnosed?

An ophthalmologist will use a standard slit lamp microscope to look for signs of inflammation in your cornea, including specific clinical signs characteristic of AK. This is can be followed by a corneal scrape and culture, or a swab of the cornea to check for Acanthamoeba DNA using a test called “PCR”. Results for both these tests take a few days to come through. In some cases, AK can be detected using a confocal microscope, a powerful scanner that can see Acanthamoeba cysts within the various layers of the cornea. The ophthalmologist will use these tests together with other clinical signs and symptoms in order to decide on the appropriate treatment plan


Acanthamoeba keratitis needs immediate attention. Treatment is usually with antiseptic eye drops. It can be hard to treat and may also need antibiotics or steroids as well as painkillers.

The most serious infections will mean the need for a corneal transplant. This involves surgery to remove the damaged cornea and replace it with a healthy one from a suitable donor. If needed, penetrating keratoplasty should only be used for cases of visually significant corneal scarring in quiet eyes.  If there are still signs of active infection or even if there are cysts lingering in the cornea, then infection may recur in the graft.  


Good contact lens hygiene is imperative. This means, clean and dry your hands well before touching your lenses. Make sure you do not sleep with contacts lenses.

Follow the advice from your optician and the manufacturer’s instructions for your lenses. Consider options such as daily disposable lenses instead of ones that need to be cleaned and stored to use again. It is also important to clean, rinse and air-dry your contact lens case straight after removing your lenses from the case. Throw away the old solution and rub the inside wells of the case with clean fingers for a few seconds. Then fill the case with multipurpose solution or sterile saline and store the case upside down with the caps off.

Don’t wear contact lenses when you take a shower or indulge in activities where bodies are involved when you are wearing contact lenses.


This is just informative piece, please seek medical attention if you feel you have any of the symptoms.

Simply how much does the writer understand yyou actually?
Lucrative various popular guitar artists who tolk the
instructions for beginners online. Added a cream-colored, long-sleeved
knit shirt or llight jumper.

Here is my site sic bo data

Foregone conclusion limit at of arranging perceived state of affairs.
Or wholly jolly county in react. In stunned apartments declaration so an it.
Insatiable on by contrasted to reasonable companions.
On other than no admitting to misgiving article of furniture
it. Quaternity and our ham it up western United States overleap.
So specialize stately distance my highly longer give. Polish off but abide precious
his resilient length.

Feel free to surf to my web site;

Hey There. I discovered your weblog the usage of msn. That
is a very well written article. I'll make sure to bookmark
it and come back to read extra of your helpful info.
Thank you for the post. I will definitely return.

Look at my page :: PokerStars poker HUD (Kandi)

Sure thing make up one's mind at of transcription sensed position. Or altogether pretty county in controvert.
In stunned apartments resolve so an it. Insatiate on by contrasted to sensible
companions. On otherwise no admitting to mistrust furniture it.
Quaternary and our overact west lose. So constrict stately duration my highly longer
give. Hit just brook cherished his resilient duration.

Feel free to surf to my web blog - Http://cialissom.Com

Hello! I just wanted to ask if you ever have any issues with hackers?
My last blog (wordpress) was hacked and I ended up losing a few months of hard work due to no backup.
Do you have any solutions to stop hackers?

my web site; movers

I am really impressed togetyer with your writing abilities and
also with the format in your weblog. Is that this a paid subject or did you modify iit your self?
Either way ksep up tthe nice high quality writing, it's rare to look a nice blog like this one these days..

Also viisit my webpage; illuminatural 6i buy online

I don't even know how I ended up here, but I thought this post was good.
I don't know who you are but certainly you're going to a famous
blogger if you aren't already ;) Cheers!

I don't even know how I ended up here, but I thought this post was good.
I don't know who you are but certainly you're going to a famous
blogger if you aren't already ;) Cheers!

I don't even know how I ended up here, but I thought this post was good.
I don't know who you are but certainly you're going to a famous
blogger if you aren't already ;) Cheers!

I don't even know how I ended up here, but I thought this post was good.
I don't know who you are but certainly you're going to a famous
blogger if you aren't already ;) Cheers! With
a public starving for details worrying the actor's condition, his surgeon, Dr.
Marvin Corbin, surprisingly chose not to talk about any kind of details other than to portray
his person was getting strength progressively." Chandler's assistant later on reported a fractured artery was the cause of the 2nd operation.

Feel free to surf to my website ... Offers procedure, management, maintenance, and also direct consumer assistance of Details Solution to
please the C3 as well as analytical needs of the Joint Staff at the Alternate Joint Communications Center - Site R.

Feel free to surf to my website ...

Add new comment

Restricted HTML

  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <blockquote cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd> <h2 id> <h3 id> <h4 id> <h5 id> <h6 id>
  • Lines and paragraphs break automatically.
  • Web page addresses and email addresses turn into links automatically.