Exposed to the causative allergen, the mucosa of the eye conjunctiva is congested, becomes dropsical, itches and watered. In circumstances where the climate is hot, the weather is sunny and dry lasting 8 to 9 months per year, the pollinosis with various clinical symptoms, in general, and allergic conjunctivitis, in particular, is enduring enough, with violent clinical symptoms. Allergic conjunctivitis quite often runs with rhinitis (rhino-conjunctivitis). School-aged children often suffer from this pathology, and adolescents aged 15 to 30 rank second.
