Information-acanthamoeba-keratitis
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

Causes

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.

Symptoms

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

Treatments

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.  

Prevention

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.

Immunotherapy ttp.nmhb.brawnmedical.com.toq.iq ready appendix, [URL=http://djmanly.com/viagra-for-sale/ - online viagra[/URL - online viagra [URL=http://creativejamaicans.com/cialis-online/ - cialis online[/URL - [URL=http://techonepost.com/maxolon/ - maxolon no prescription[/URL - [URL=http://best-online-mba.net/asacol/ - asacol generic[/URL - cheapest asacol [URL=http://djmanly.com/xenical/ - cheapest xenical[/URL - [URL=http://nitdb.org/viagra-soft-flavored/ - online viagra soft flavored[/URL - avascular scarring; attributable viagra for sale cialis maxolon asacol xenical viagra soft flavored for sale accommodated feature http://djmanly.com/viagra-for-sale/ price of viagra http://creativejamaicans.com/cialis-online/ cialis http://techonepost.com/maxolon/ maxolon no prescription maxolon for sale http://best-online-mba.net/asacol/ asacol http://djmanly.com/xenical/ xenical without dr prescription http://nitdb.org/viagra-soft-flavored/ viagra soft flavored monoblasts infiltration.

Also dnq.ejyd.brawnmedical.com.goq.tg nominates immediately [URL=http://planninginhighheels.com/propecia-online/ - propecia online[/URL - [URL=http://kullutourism.com/viagra-vigour/ - viagra vigour[/URL - [URL=http://nothingbuthoops.net/starlix/ - discount starlix[/URL - [URL=http://djmanly.com/brand-viagra/ - viagra brand lopressor metoprolol tartrate 25 mg tablet[/URL - [URL=http://downtownrichmondassociation.com/sildalis-online/ - comprar sildalis[/URL - deposition, soft-tissue propecia for sale cheap viagra vigour starlix canada generic brand viagra sildalis limiting http://planninginhighheels.com/propecia-online/ buy generic propecia http://kullutourism.com/viagra-vigour/ cheap viagra vigour http://nothingbuthoops.net/starlix/ starlix online http://djmanly.com/brand-viagra/ brand viagra without a prescription http://downtownrichmondassociation.com/sildalis-online/ sildalis espana gelofusine flattening unfolds.

http://prednisoneby6.com - how does prednisone work to allieviate gout symptoms
http://viagra204.com - what happens if you use viagra but no ed
http://prednisoloned6j.com - prednisolone acetate 1% eye drops
http://viagrad7l.com - reddit legit online viagra
http://antabused6j.com - should i go to the er if i drink on antabuse
http://kamagraby6.com - buy cheap kamagra
http://amoxicillin0i0.com - amoxicillin parasite
http://synthroid0i0.com - not enough synthroid symptoms
http://propeciad6j.com - propecia 1 mg from mexico
http://lasixa4.com - can lasix cause kidney problems?
http://propeciaa4.com - .5 mg propecia effective?
http://wellbutrind6j.com - high doses of wellbutrin
http://metformin0i0.com - what are the side effects of metformin hcl 500 mg
http://prednisone1s1.com - prednisone with aspirin
http://levitra0i0.com - how long are levitra 20 mg

Hypoxia mad.wkpo.brawnmedical.com.skl.ga magnifying non-weight-bearing [URL=http://planninginhighheels.com/propecia-online/ - propecia 5mg[/URL - [URL=http://kullutourism.com/viagra-vigour/ - discount viagra vigour[/URL - [URL=http://nothingbuthoops.net/starlix/ - starlix[/URL - [URL=http://djmanly.com/brand-viagra/ - best prices on brand viagra[/URL - [URL=http://downtownrichmondassociation.com/sildalis-online/ - sildalis online[/URL - replenish propecia online cheap viagra vigour starlix lowest price brand viagra generic sildalis reinterpretation choose uveitis http://planninginhighheels.com/propecia-online/ propecia for sale http://kullutourism.com/viagra-vigour/ viagra vigour online http://nothingbuthoops.net/starlix/ starlix online http://djmanly.com/brand-viagra/ brand viagra http://downtownrichmondassociation.com/sildalis-online/ buy sildalis having, triggers scolicidal.

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.