Final answer:
Contact lens wearers are at greater risk for developing keratitis because contact lenses can introduce changes in the normal microbiota of the conjunctiva, increasing the risk of infection. Bacterial keratitis, which is most frequently caused by Staphylococcus epidermidis and Pseudomonas aeruginosa, is a common infection that can lead to blindness if left untreated. Proper care of contact lenses and avoiding wearing them overnight can greatly reduce the risk of infection.
Step-by-step explanation:
Contact lens wearers are at greater risk for developing keratitis because contact lenses can introduce changes in the normal microbiota of the conjunctiva, increasing the risk of infection. Bacterial keratitis, which is most frequently caused by Staphylococcus epidermidis and Pseudomonas aeruginosa, is a common infection that can lead to blindness if left untreated. Proper care of contact lenses and avoiding wearing them overnight can greatly reduce the risk of infection.