Most often the condition is caused by prolonged exposure to Klieg lights, therapeutic lamps or acetylene torches.

The finding supports the hypothesis that prolonged exposure to the sun at altitude, in the less dense atmosphere (with the resultant lower UV absorption), is one cause of the condition.

[3] The diagnostic process of Actinic conjunctivitis stems from a doctor check-up once symptoms of redness, itching, or infection become evident in one or both eyes.

[4][5] The wearing of sunglasses and avoiding prolonged sun exposure are the two main ways to prevent actinic conjunctivitis.

Once the patient contracts this conjunctivitis, however, the symptoms can be treated with cyclosporine A and other steroids.