*Age and sex – 4–20 years; more common in boys than girls. *Season – More common in summer. Hence, the name Spring catarrh is a misnomer. Recently it is being labelled as Warm weather conjunctivitis. *Climate – More prevalent in the tropics.<unk>  cases are mostly seen in hot months of summer, therefore, more suitable term for this condition is "summer catarrh" Ref.
Vernal keratoconjunctivitis
Phlyctenular keratoconjunctivitis
Superior limbic keratoconjunctivitis
Adenoviral keratoconjunctivitis
Ocular larva migrans
Actinic conjunctivitis
Ligneous conjunctivitis
Ocular rosacea