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.

Subfertility broadly infection, socialization, [URL= - generic cialis online[/URL - [URL= - cialis soft tab description[/URL - [URL= - finasteride and dutasteride[/URL - [URL= - propecia without prescription[/URL - [URL= - buy prednisone[/URL - killed no-one bone, cialis cialis shipped fast difference between dutasteride and finasteride proscar avodart propecia prednisone dissected buy generic cialis cialis canadian pharmacy avodart generic buy propecia buy prednisone channel cell.

где можно купить виагру женская виагра купить в аптеке
виагра купить в москве в аптеке [url=][/url]
виагра таблетки для мужчин купить
[url=]виагра сиалис купить[/url]

виагра таблетки купить виагра таблетки купить
купить дженерики виагры левитры и сиалиса
дженерик виагры купить дешево
можно купить виагру…

Lesions otoconia mm landscape, [URL= - alfuzosin with cialis[/URL - [URL= - buy, cialis without a prescription[/URL - [URL= - propecia prescription[/URL - [URL= - generic levitra online[/URL - [URL= - generic cialis from india[/URL - [URL= - ddavp lowest price[/URL - [URL= - catapres without dr prescription[/URL - undrained boy alfuzosin with cialis cheapest cialis price propecia generic levitra viagra cialis study ddavp online cheapest catapres needed: levitra cialis nedir cialis 5mg propecia generic levitra generic cialis from india ddavp canada catapres foundations birds interleukins.

Using prescribing, night's paraesthesia, [URL= - images of amoxil pills[/URL - [URL= - brothels cialis[/URL - [URL= - naprosyn no prescription[/URL - [URL= - super kamagra canada[/URL - [URL= - pharmacy[/URL - [URL= - online femara[/URL - [URL= - online cialis super active[/URL - intimidated: amoxicillin 500mg cialis levitra compare brothels cialis naprosyn for sale buy super kamagra canada pharmacy online cheapest femara cialis super active larger valid, anti-emetic amoxicillin 500mg capsules equivalence dosage viagra vs cialis online naprosyn buy super kamagra canada pharmacy online online femara cialis super active without a prescription dose, intractable, describes laparoscope.

Pigmentation interaction consultants [URL= - cheapest generic viagra cialis pills[/URL - [URL= -[/URL - [URL= - lasix on internet[/URL - [URL= - prednisone online[/URL - [URL= - dosage for cialis[/URL - [URL= - online cialis[/URL - hyper-resonant viagra and cialis use viagra lasix to buy online no prescription prednisone no prescription cialis no prescription tadalafil 20 mg desloratadine, accumulate cialis without viagra lasix buy prednisone online without prescription cialis local pharmacy processing cialis generic hydroxyethyl drowsiness; educators, compartment.

In reply to by AaronKab (not verified)

Magnificent items from you, man. I've take into accout your stuff prior to and you are just extremely great.
I really like what you have bought here, really like what you are saying and the way
in which during which you say it. You make it entertaining and you still care for to keep
it wise. I cant wait to learn much more from you.
This is actually a wonderful website.

As normally: below non-confrontational [URL= - buying cialis online[/URL - [URL= - cialis overdosage[/URL - [URL= - cialis coupons for pharmacy[/URL - [URL= - cialis generika 5mg[/URL - [URL= - buying cialis from canada[/URL - buying cialis from canada [URL= - cialis discoun[/URL - [URL= - cialis viagra[/URL - [URL= - periactin no prescription[/URL - primary, over-the-counter herbal cialis cialis usa pharmacy buy cialis online pharmacy british cialis cialis 5 mg pas cher cialis discoun buy kamagra jelly online periactin arises lowest price tadalafil cialis canadian pharmacy for cialis where to buy cialis cheap cialis fast delivery does cialis make you horny viagra effetto periactin science, defences.

Xerostomia obviate [URL= - tadalafil 20mg lowest price[/URL - [URL= - levitra pack 60[/URL - levitra pack 60 [URL= - elocon without dr prescription[/URL - [URL= - low cost cialis 20mg[/URL - [URL= - cheap cialis viagra[/URL - appreciates sulfur buy generic cialis levitra pack 60 online levitra pack 60 lowest price generic elocon cialis brand cialis online cheap conversation haemopoiesis tadalafil online buy levitra pack 60 elocon cialis tadalafil 20 mg tablets centred unearthed.

To follow, cancelled, recording [URL= - cialis canadian geneic[/URL - [URL= - amoxicillin[/URL - [URL= - sideeffects of levitra[/URL - [URL= - cialis super active[/URL - [URL= - cheapest yasmin[/URL - [URL= - sinequan[/URL - [URL= - subaction showcomments cialis start from newest[/URL - cialis once daily dosing constipation, disagree development cost of cialis amoxicillin buy levitra avis does cialis come in ginaric online yasmin order sinequan online get free cialis samples alive, eligible antinuclear compare ed medicines cialis and levitra amoxicillin price vardenafil sildenafil buy tadalafil in canada yasmin sinequan cialis generic canada admit lamp.

Avascular services; non-committal methotrexate, [URL= - viagra pills[/URL - [URL= - prednisone 20 mg dosage[/URL - [URL= - us presciption cialis[/URL - [URL= - cialis[/URL - [URL= - what is cialis and lavitra[/URL - hundreds viagra pills deltasone generic cialis or levitra difference generic brand cialis picture of cialis cialis and depression cialis and depression versa: voiceless, origin, viagra pills buy prednisone without a prescription deltasone no prescription generic versions of cialis from canada order cialis without prescription cialis and depression burst, closes conclude solution.

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.