All patients will undergo a thorough ocular examination by the ophthalmologist-in-charge or an ACSIKS co-investigator, and details of the infectious keratitis and associated findings documented on the ACSIKS Clinical CRF. With the approval of the ophthalmologist-in-charge, corneal scrapings will then be collected as per the ACSIKS Microbiological Protocol. Each study subject will consequently still be managed by the ophthalmologist-in-charge according to his/her current clinical approach, with appropriate medical or surgical treatment carried out in accordance with the practice patterns and standards of his/her institution, and no attempt to deviate from current treatment practices.