An Introduction to Microbial Eye Infections
The eye comes into constant exposure with the external environment and is therefore susceptible to microbial invasion. The eye has various methods of defence, including antimicrobial components in the tear film, as well as tight junctions between cells of the outer epithelial layer of the cornea. These barriers can be disrupted by contact lens use, trauma, or surgery, which can result in intraocular infections. Other risk factors include immunosuppression and severe dry eyes. Microbial eye disease may range from mild, self-limiting conditions such as viral conjunctivitis, to severe, sight-threatening diseases like microbial keratitis and endophthalmitis. This article provides an overview of the causative agents of microbial eye infections, in order to aid recognition of potentially sight-threatening infections.
