What Is Conjunctivitis?
1. Causes
Conjunctivitis can be caused by several factors such as a bacterial infection, viral infection, irritants, allergens, dryness, mechanical abrasions, and more. The etiologic agent needs to be identified to obtain appropriate treatment. In contagious causes such as bacterial and viral infections, transmission can occur from person to person contact or through contaminated objects and water.
In bacterial infections, conjunctivitis can occur when the bacteria reaches the conjunctiva from the surrounding skin, edges of the eyelids, nasal cavity, contact lenses, and infected eye drops. it has been estimated that 65% to 90% of viral conjunctivitis cases are due to human adenovirus infections. The different types of conjunctivitis can be divided according to the different causes.
