Keratitis can have many causes, but bacterial keratitis is most frequently caused by *Staphylococcus epidermidis* and/or *Pseudomonas aeruginosa*. Contact lens users are particularly at risk for such an infection because *S. epidermidis*  and *P. aeruginosa* both adhere well to the surface of the lenses.

University of Southern Mississippi

This is a serious bacterial infection of the cornea this type of infection usually developed fairly quickly. 

Bacterial Keratitis

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

*Staphylococcus epidermidis* and/or *Pseudomonas aeruginosa*

Redness and irritation of the eye, blurred vision, sensitivity to light, progressive corneal scarring, which can lead to blindess. 

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