Final answer:
Corneal ulcers can be caused by various bacteria, including Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. Contact lens wearers are at greater risk due to improper lens care or wearing lenses overnight. Prompt antibiotic treatment is essential.
Step-by-step explanation:
Corneal ulcers can be caused by a variety of bacteria. The correct answer is f. all the above, which includes bacteria like Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. These bacteria can lead to severe eye infections that necessitate prompt treatment to prevent blindness.
Individuals who wear contact lenses are at a heightened risk for developing bacterial keratitis. Improper care of contact lenses or wearing lenses overnight can increase the susceptibility to infection by bacteria such as Staphylococcus epidermidis and Pseudomonas aeruginosa, which adhere well to lenses. Early diagnosis and aggressive antibiotic treatment are crucial for resolving infections and avoiding permanent eye damage.