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December 2007

Risk Factors for Contact Lens–RelatedFusarium Keratitis—Reply

Author Affiliations

Copyright 2007 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2007

Arch Ophthalmol. 2007;125(12):1716. doi:10.1001/archopht.125.12.1716-a

In reply

Our study showed significant increased risks (odds ratio, 21.5; 95% confidence interval, 4.0-115.5; P < .001) of contact lens–related Fusarium keratitis with the use of ReNu MultiPlus. We have not, however, inferred a causal relationship. The criteria for a cause and effect relationship include biological plausibility, a strong association, temporality of the association, a dose-response trend, lowering of risks with the removal of exposure, and consistency of findings across different studies.1 Our findings were not consistently replicated in Hong Kong or the United States.24

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