conjunctivitis is caused by what
Conjunctivitis may also be caused by allergens such as pollen, perfumes, cosmetics, smoke, dust mites, Balsam of Peru, and eye drops. Conjunctivitis is part of the triad of reactive arthritis, which is thought to be caused by autoimmune cross-reactivity following certain bacterial infections.
Adenovirus is by far the most common cause of viral conjunctivitis, although the condition can also be caused by other viruses. Viral conjunctivitis often occurs in community epidemics, with the virus transmitted in schools, workplaces and physicians' offices.
For pinkeye caused by an irritating substance, use water to wash the substance from the eye for five minutes. Your eyes should begin to improve within four hours. If the conjunctivitis is caused by acid or alkaline material such as bleach, immediately rinse the eyes with lots of water and call your doctor immediately.