It's helpful to know that only infectious conjunctivitis (meaning pink eye caused by viruses or bacteria) is contagious.

Eye infections are common and ... Like blepharitis, styes are generally not contagious. A stye should disappear in about seven to 10 days. Treatments include applying a clean, warm, damp cloth ...

This timing matters because the type of pink eye one has often determines if one is contagious and how long symptoms will generally last. "Viral conjunctivitis lasts a few days to a week," says ...