What causes bacterial conjunctivitis?

Bacterial conjunctivitis, also known as pink eye, is an inflammation of the conjunctiva, the clear membrane that lines the eyelid and covers the white part of the eye, caused by bacterial infection. It is highly contagious and can be spread through direct contact with an infected person or through contact with contaminated objects. The bacteria that commonly cause bacterial conjunctivitis include:

- Staphylococcus aureus (staph): Staph bacteria are commonly found on the skin and in the nose and can cause a variety of infections, including conjunctivitis.

- Streptococcus pneumoniae (pneumococcus): This type of bacteria is responsible for various infections, including pneumonia and meningitis, and can also cause conjunctivitis.

- Haemophilus influenzae (H. influenzae): This bacteria can cause a range of infections, including respiratory infections and meningitis, and can also lead to conjunctivitis.

- Pseudomonas aeruginosa: This bacteria is commonly found in soil and water and can cause infections, particularly in individuals with weakened immune systems or who wear contact lenses.

- Other bacteria: Various other types of bacteria, such as Moraxella catarrhalis, Staphylococcus epidermidis, and Neisseria meningitidis, can also occasionally cause bacterial conjunctivitis.