Contact Lenses Today® is edited by Dr. Joseph T. Barr and the staff of Contact Lens Spectrum. This week CLToday® reaches more
than 12,000 readers in 74 countries.
AMO Recalls Complete MoisturePlus MPS
Late Friday evening, Advanced Medical Optics (AMO) announced an immediate voluntary recall of its Complete MoisturePlus (CMP) multipurpose contact lens solution (MPS) after data from the
Centers for Disease Control (CDC) showed the risk of developing Acanthamoeba keratitis (AK) was at least seven times greater for patients who used AMO CMP. No single lot number was repeated, suggesting that
AMO CMP was not intrinsically contaminated.
In Jan. 2007, the CDC initiated a retrospective survey of 22 ophthalmology centers nationwide to assess whether cases of AK were increasing in the U.S. In March 2007, data from 13 centers demonstrated an increase in
culture-confirmed cases of AK with wide geographic distribution. On March 16, the CDC initiated a multi-state investigation to look for risk factors associated with the increase in AK cases. The report indicated an
association with AK in soft contact lens wearers who had used AMO CMP solution. The CDC has received reports of 138 cases of culture-confirmed AK in 35 states and Puerto Rico, with complete patient data available for
46 case-patients.
Lab testing is ongoing, but an initial analysis was conducted using data from the first 46 completed patient interviews. Among the 46 culture-confirmed patients interviewed, 59% (27) were female, 85% (39) wore soft
contact lenses. In addition, 38% (16) reported swimming and 83% (35) reported showering while wearing their contact lenses. Of the 39 patients for whom clinical data was available, 36 reported using one or more
specific types of contact lens solution, 21 (58%) reported some use of AMO CMP in the month before onset of symptoms, 20 (56%) reported using AMO CMP as their primary solution and 14 (39%) reported using AMO CMP
exclusively. The CDC notes that although the results of the initial analysis are preliminary, they suggest that use of AMO CMP increases the risk for AK.
The CDC recommends clinicians consider obtaining clinical specimens for culture before initiating treatment for AK. The Food and Drug Administration (FDA), CDC and AMO ask that clinicians and labs report cases of
AK to state and local health departments or directly to the CDC at 77-488-7775. Additional information is available at
http://www.cdc.gov/ncidod/dpd/parasites/acanthamoeba/index.htm Patients who believe they are in possession of the recalled product
should discontinue use immediately and call 1-888-899-9183.
Dryness = Dropouts
What effect does contact lens dryness have in your contact lens practice? Of the 31 million soft contact lens wearers, 21 million, or 67%, self-report that eyes feel dry during contact lens wear. There are nearly 2.7
million contact lens dropouts annually. Many of these dropouts say dryness was a major reason for discontinuing lens wear. Offering patients ACUVUE® OASYS™ Brand Contact Lenses with HYDRACLEAR™ Plus, a lens designed
to meet the demands of contact lens wearers in environments that can make eyes feel tired and dry, can keep patients wearing their contact lenses longer and boost your contact lens practice.
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This month at
http://www.siliconehydrogels.org, consider a strategy for using SiH lenses to increase the success of your practice; investigate the potential for using SiH lenses in the
treatment of dry-eye; review the recent research into silicone hydrogels (SiH) presented at the American Academy of Optometry, and learn how the SiH market has evolved over the past seven years.
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Dryness = Dropouts