Spring catarrhal conjunctivitis

Spring catarrhal conjunctivitis (veRNAl conjunctivitis) is an allergic disease with strong seasonality and often invades both eyes. Symptoms occur when spring flowers bloom, and by the end of autumn the symptoms disappear. Relapses occur every year, and those who are mild will not relapse after 3 to 4 years, and those who are severe may relapse continuously for more than 10 years. The disease is characterized by itchy eyes, large and flat nipples on the eyelid and conjunctiva, and conjunctival gel-like hyperplasia near the limbus, with a large amount of eosinophils in the secretion.

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