 Other organisms are also major causative factors in bacterial keratitis associated with contact lens wear, although their prevalence varies across different locations.These include both the "Staphylococcus" species ("aureus" and "epidermidis") and the "Streptococcus" species, among others.Microbial keratitis is a serious focal point of current research due to its potentially devastating effect on the eye, including severe vision loss.