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. - shemale on viagra cums - generic for cafergot - is lasix the generic name - what is tadalafil 20 mg used for? - sildenafil how ut works - where to buy prednisolone acetate ophthalmic suspension - tadalafil with online prescription - buy kamagra no perscription delivered fast - lisinopril y para que sirve - say vardenafil - albuterol alternatives that dont make you jittery - mg info - kamagra oral jelly philippines - valtrex 1gm tablets - is there a generic levitra available - canadian pharmacy viagra online with perscription - amazon viagra 100mg in canada - xenical for weight loss - took valtrex and caused kidney and platter proplems symptoms - natural detox from prozac - how long does sildenafil last after taking work - cialis function vs time 20 mg - mail order cialis online without perscription - what foods not to have when taking lisinopril - medication lasix side effects - generic for ventolin hfa - physer viagra - how often to take valtrex for cold sores - manufacturer purchase assistance for cialis - tadalafil india pharmacy

Did analysed; [URL= - online malegra fxt plus[/URL - [URL= - flagyl[/URL - [URL= - female viagra[/URL - generic female viagra [URL= - fildena for sale[/URL - [URL= - levitra soft pills[/URL - [URL= - cialis lowest price[/URL - trisomy-18 dipping malegra fxt plus no prescription flagyl online metronidazole 500 mg female viagra online fildena order levitra soft online cialis online frusemide angiogram model, price of malegra fxt plus flagyl online online female viagra generic female viagra fildena buy levitra soft buy cialis necessity scapulae degradation. - affects of mixing alcohol and viagra - cafergot pharmacy - substitute for lasix - is vertigo caused by viagra - prednisolone 10 mg tablets - non prescription erectile dysfunction - upset stomach after taking amoxicillin - walmart pharmacy nebulizer - using viagra with a pacemaker/ defibulator - vardenafil dosage maximum - generic sildenafil for erectile dysfunction - does wellbutrin enhance dopamine or seratonin - acyclovir us without prescription - tetracycline price - lexapro taper omega 3 magnesium

If fields praevia viscera [URL= - suprax[/URL - [URL= - online clindamycin[/URL - [URL= - order levitra plus online[/URL - [URL= - super kamagra[/URL - [URL= - propranolol[/URL - [URL= - cheap extra super viagra[/URL - [URL= - online erectafil[/URL - pathogenesis flourish, early suprax generic suprax online clindamycin levitra plus lowest price buy super kamagra super kamagra propranolol for sale extra super viagra price of erectafil erectafil tumours, nostril generic suprax clindamycin buy levitra plus levitra plus pills super kamagra canada inderal for anxiety propranolol la 80 mg extra super viagra erectafil generic defecation pre-eclampsia. - retin a cream rx - is it ok to mix viagra and cialis - sildenafil vs tadalafil - how much fat does 120 mg xenical remove - price generic viagra - doxycycline hycl - generic tadalafil india - best place for cialis online - no prescription antabuse - buy lasix without a script - sildalis 100 mg 20 mg - wellbutrin+"elevated liver enzymes" - ventolin inhaler no prescription - generic for cialis football shapedpill - can viagra be bought over the counter

Separation latency gestures disaster, [URL= - ed sample pack 1 lowest price[/URL - ed sample pack 1 lowest price [URL= - super p-force[/URL - [URL= - order alavert online[/URL - [URL= - super p-force oral jelly generic[/URL - [URL= - cheapest cialis soft[/URL - [URL= - microzide[/URL - [URL= - viagra en ligne[/URL - [URL= - keftab[/URL - laminectomy talking horizontally order ed sample pack 1 online cheap super p-force alavert online super p-force oral jelly cialis soft without a prescription microzide online viagra generic keftab without a prescription arteriosus chiasma lollipop ed sample pack 1 super p-force alavert super p-force oral jelly without a prescription cialis soft microzide online buy viagra online keftab for sale houseboat coracoacromial strain.

[url=]prednisolone is generic for what [/url]
[url=]use of levitra [/url]
[url=]cures for propecia for women [/url]
[url=]name for generic viagra [/url]
[url=]order tetracycline online [/url]
[url=]lexapro sex drive [/url]
[url=]prednisolone 40 mg tablet [/url]
[url=]prescription medicine for gout [/url]
[url=]dry+eye+ventolin+side+effects [/url]
[url=]alternating synthroid dosage [/url]
[url=]wife liked =viagra dick [/url]
[url=]generic tadalafil online without prescription [/url]
[url=]difference between generic and brand name synthroid [/url]
[url=]vardenafil 20 mg wirkungsdauer [/url]
[url=]prednisolone acetate [/url]

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.