Microbiological Diagnosis of Infectious Keratitis to Pathogenic Fastidious Germs

Primary Purpose: Compare the ability diagnostic of non-invasive sampling swab corneal versus the gold standard, (invasive vaccinostyle uptake) for the systematic search for pathogens tedious in corneal specimens. Hypothesis: The diagnostic strategy using a microbial testing of cornea method has a sensitivity of 90% and a specificity of 80% or more over the policy diagnostic using a sampling by vaccinostyle method. Primary outcome measures: Sensitivity, specificity, positive and negative predictive values, Diagnostic odds ratio.