The most frequent causes of microbial keratitis are bacterial, fungal, viral and parasitic (acanthamoeba). Historically, fungal keratitis was thought to be a suppurative corneal lesion with one or ...

The incidence of microbial keratitis after refractive surgery is very low; however, cases may be under-reported. Gram-positive bacteria are the main causes of microbial keratitis after refractive ...