**6. Diagnostic tests**

In the case of a diagnostic process of BK, an interview with the patient and microbiological tests are important. The clinical appearance of the infection is not a reliable factor indicating the causative pathogen. Routine proceeding should be the collection of material for culture and preparation of direct material. In patients wearing contact lenses, the contact lens itself may provide key information about the pathogen. The corneal ulcer should be cultured for the identification of the causal organism and make an antibiogram for achieve an antibiotic susceptibility before commencing antimicrobial therapy [31]. Based on the American Academy of Ophthalmology, it is still recommended to perform the first culture and/or smears in the following situations [9]:

