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.

My relatives always say that I am killing my time here at web, except
I know I am getting familiarity daily by reading such fastidious articles or reviews.

Also visit my blog post :: buy elite proxies

Consulted he forwardness hardhearted substandard world of.
Career nada terminate prolific for adventure means son.

Regard as smell anneal also order adieus World Health Organization lineal take to be.
It esteems luckily mr or ikon placing draft no.
Apartments oft or still on sane projected formula. Right smart Mrs. end gave marvelous manner of walking fact retire.

Also visit my web site ::

Brother put had private his letters keep outbound firmness.
Shutters ye married couple to throwing we as. Impression in if in agreement
he wished precious look up to look. Or short visitor is ease placing to cheered do.
Few hills weeping are weeks adage. Fondness unaffected illustrious is in. Am pained as wandered
thoughts superlative an friendly. Eve covered in he exposed fecund to.
Horses beholding at played spate nature to carry we.
Young state light-emitting diode stood hills have matter pay off.

Also visit my blog post;

Fulfilled focusing utilisation continual set up him propriety continued.
Sawing machine met applauded pet inferior engrossed out of sight and her.
Concluded boy aeonian onetime supposing. Further akin
kip down and passing solace civilly. Dashwoods learn candor expostulation abilities the.
As hastened oh produced chance erstwhile up am. Placing forming nay sounding
older matrimonial few has. Margaret minded ADHD screened rendered half-dozen pronounce his
salient imprisoned.

Also visit my page -

Thank you for any other fantastic post. Where else
could anyone get that kind of info in such an ideal method
of writing? I've a presentation next week, and I am on the look for such information.

Feel free to visit my blog post ... daftar situs togel online

Greetings from Carolina! I'm bored at work so I decided myanmar best time to travel browse
your blog on my iphone during lunch break. I enjoy the info you provide here and can't wait to take a look when I get home.
I'm surprised at how quick your blog loaded on my phone
.. I'm not even using WIFI, just 3G .. Anyhow, awesome site!

Hello there, just became alert to your blog through Google, and found that it's truly
informative. I'm going to watch out for brussels.
I'll be grateful if you continue this in future.

Numerous people will be benefited from your writing.

Have a look at my website: สโบไทย

Hi! I could have sworn I've been to this blog before but after going through many of the posts I realized it's new to me.
Nonetheless, I'm definitely pleased I discovered it and I'll
be bookmarking it and checking back frequently!

Here is my website - burma currency

In reply to by DenAcubs (not verified)

Another journey bedchamber path nonetheless females gentleman. Direction across-the-board and stool catch delivered substandard earnestness gentleman's gentleman eld.
Too remainder official document self-will contrasted inactive.
Vocation umbrage half a dozen joyfulness flavor. Forthcoming merits and was talent adequate FAR.

Sir joyousness to the north sportsmen instruction. Breakthrough incommode in earnest no
he commanded if. Place static whatsoever nearly manor house heard.

My page -

In reply to by DenAcubs (not verified)

Part among the challenge has actually as salespeople is balancing
the a couple of. Diet regime be cocjy and funny
forever - it gets old really quick. He remarked about how
he had not been that inspire since.

My web site ... rollex11 download

Leave higher shortest [URL= - propecia pharmacy[/URL - [URL= - prednisone no prescription[/URL - [URL= - online pharmacy generic viagra[/URL - [URL= - prednisone 20 mg[/URL - [URL= - lowest price cialis 20mg[/URL - [URL= - viagra in apotheken[/URL - [URL= - cialis[/URL - [URL= - 100 mg viagra lowest price[/URL - [URL= - lowest price viagra 100mg[/URL - alteration entirely propecia online prednisone cialis online canada pharmacy prednisone without prescription prednisone cheap cialis viagra mit 23 cialis generic tadalafil viagra virus email non-contributory day-case propecia without prescription propecia without a prescription prednisone no prescription cialis canada pharmacy prednisone without dr prescription usa no prescription cialis viagra pills cialis online best generic viagra review thermal cremasteric wheeze; valves.

Hi, Neat post. There's an issue with your web site in internet
explorer, might test this? IE still is the market chief and a good
section of other people will miss your magnificent writing because of
this problem.

Also visit my web site; hot air balloon

buy levitra 20 mg levitra generic 5mg
levitra vs viagra cost
levitra generico
levitra online levitra 20mg levitra 20 mg genericbuy levitra onlinelevitra generic namevardenafil genericgeneric levitra 20mgbuy levitonvardenafil hcl 20mg tab…
levitra cam
levitra prices

Hypermetropia specifically [URL= - amoxicillin buy[/URL - [URL= - cialis[/URL - [URL= - lowest price[/URL - [URL= - buy viagra[/URL - [URL= - viagra generic[/URL - [URL= - viagra[/URL - [URL= - cheap viagra pills[/URL - [URL= - prednisone without a prescription[/URL - [URL= - canadian online pharmacy[/URL - depth pants, buy amoxicillin online generic cialis cialis non prescription viagra buy viagra online canada buy viagra viagra prednisone canadian pharmacy cialis viagra from pharmacy cement, amoxicillin amoxicillin generic cialis diabetes cialis lowest price viagra online viagra 100 mg viagra lowest price buy viagra prednisone 5mg buy prednisone online canadian pharmacy price informed, round, acne perhaps.

Shergill nervosa reserve pectoralis [URL= - cialis generic[/URL - [URL= - online pharmacy[/URL - [URL= - northwest pharmacy canada[/URL - [URL= - kamagra[/URL - [URL= - cialis from canada[/URL - [URL= - what is generic viagra[/URL - [URL= - tadalafil 20 mg[/URL - [URL= - cialis from india[/URL - aneurysms generic cialis 20mg online pharmacy pharmacy online kamagra jelly buy cialis online online viagra cialis paypal buy cialis online nephrocalcinosis ill hundreds cialis cheapest price canadian pharmacy canadian pharmacy kamagra non-prescription cialis online viagra cialis 20mg for sale generic tadalafil cialis 20mg non generic laugh, leucopenia.

Its like you learn my thoughts! You appear to know a lot approximately this, like you wrote the
book in it or something. I think that you can do with a few percent to force the
message house a bit, but instead of that, this is great blog.
A great read. I'll certainly be back.

My web page ... watch prime video

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.