On May 25, 2007, Advanced Medical Optics issued a global recall for its AMO Complete Moisture Plus Multi-Purpose solution. The contact lens solution recall was issued after an investigation by the Centers for Disease Control linked AMO Complete with an outbreak of Acanthamoeba keratitis, a type of parasitic eye infection.
First sign of problems
AMO Complete was released in August 2003. In 2004, an eye specialist at the University of Illinois at Chicago began to notice an increase in the number of patients being diagnosed with Acanthamoeba keratitis—a dozen in that year alone. Ordinarily, he would only see one or two such cases in the course of a year.
Alarmed by this increase in Acanthamoeba keratitis infections, Dr. Tu passed his findings to the Illinois Department of Public Health, who passed them on to the CDC. In January 2007, the agency contacted 22 eye centers across the United States and found that 13 had seen an increase in this type of infection since 2004. [Timeline of events]
When the CDC expanded its investigation in March 2007, it discovered that many of these Acanthamoeba keratitis infections were occurring among users of AMO Complete. According to the CDC, users of the contact lens solution are seven times more likely to develop Acanthamoeba keratitis than other patients.
AMO Complete recall issued
Based on these findings, the company issued a worldwide AMO Complete recall. So far, the CDC has identified at least 138 confirmed Acanthamoeba keratitis infections. One doctor estimates that half of the patients who develop this type of infection will eventually require a corneal transplant.
Officials have advised users to throw away unused bottles of AMO Complete and any lenses or cases that may have come into contact with the solution. However, it is important that patients who have been injured after using AMO Complete store these items in a safe container.
In the event that they decide to file a lawsuit, bottles, lenses and cases may be the only way of proving that the damage to their vision was caused by using AMO Complete.
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