Update: Complete MoisturePlus Contact Lens Solution Causing Acanthamoeba Keratitis

Sunday, April 20, 2008

Complete MoisturePlus Contact Lens Solution, manufactured by Advanced Medical Optics, is used for cleaning and storage purposes for soft contact lenses. The solution recently has been found by the Centers for Disease Control and Prevention to cause a seven-fold increase in a rare eye infection, Acanthamoeba keratitis, affecting those who use it. The infection is very serious and can lead to blindness or corneal infections in those who are exposed to the bacteria.

The Centers for Disease Control and Prevention (CDC) this year began receiving numerous complaints about outbreaks of Acanthamoeba keratitis, an infection caused by microscopic parasites that literally infest the human eye.

In evaluating the Acanthamoeba keratitis outbreak, the CDC identified 138 confirmed cases of Acanthamoeba keratitis in the United States, with complete data available for 46 case-patients. Thirty-nine of the 46 case-patients wore soft contact lenses. Among the soft contact lens users 58% reported having used Advanced Medical Optics (AMO) Complete MoisturePlus Multi-Purpose Solution in the month prior to manifestation of symptoms. CDC released a Health Advisory through its Health Alert Network on May 25 of this year, informing contact lens wearers that they should discard all Moisture Plus solution and any lenses or lens cases that came in contact with Moisture Plus lens solution.

If not controlled in time, the infection can permanently blind its victim by scarring or tearing the cornea, which is responsible for about 80 percent of a person's vision. Such victims will need a cornea transplant if they are to ever see clearly again. This is an extremely dangerous infection. If you haven't stopped using Complete MoisturePlus Contact Lens Solution then do so immediately. This is the second major eye infection outbreak after Fusarium Keratitis last year.

According to CDC users of MoisturePlus should:

1. stop using the product immediately and contact the company at 1-888-899-9183 or on the web at http://www.amo-inc.com for instructions on what to do with unused solution;
2. discard all soft contact lenses used with AMOCMP;
3. discard all contact lens storage cases used with AMOCMP; and
4. consult their eye care provider about choosing an alternative contact lens solution.

Furthermore, they should visit their eye care provider if they experience any signs of eye infection, including eye pain or redness, blurred vision, sensitivity to light, sensation of something in the eye, or excessive tearing.

This is the second major outbreak of rare fungal infection after Fusarium Keratitis which is caused by contact lens solutions. Is it merely a coincidence? I think the safety regulation compliance of factories of contact lens cleaner solution manufacturers like Bausch & Lomb and Advanced Medical Optics are not being properly monitored. Should be regulations be more stringent or the enforcement? I think the enforcement may be at lapse here.

There are several ongoing lawsuits against AMO with some seeking class action status. We will keep you updated.


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