Vernal keratoconjunctivitis (VKC) is a recurrent, bilateral, and self-limiting inflammation of conjunctiva, having a periodic seasonal incidence. Vernal keratopathy
Corneal involvement in VKC may be primary or secondary due to extension of limbal lesions. Vernal keratopathy includes 5 types of lesions. Punctuate epithelial keratitis. Ulcerative vernal keratitis (shield ulceration). Vernal corneal plaques. Subepithelial scarring. Pseudogerontoxon. Sign and symptoms
Symptoms- VKC is characterised by marked burning and itchy sensations which may be intolerable and accentuates when patient comes in a warm humid atmosphere. Associated symptoms include mild photophobia in case of corneal involvement, lacrimation, stringy discharge and heaviness of eyelids. Signs of VKC can be described in three clinical forms (Cameron Classification):Palpebral form- Usually upper tarsal conjunctiva of both the eyes is involved. Typical lesion is characterized by the presence of hard, flat-topped papillae arranged in cobblestone or pavement stone fashion. In severe cases papillae undergo hypertrophy to produce cauliflower-like excrescences of giant papillae. Bulbar form- It is characterised by dusky red triangular congestion of bulbar conjunctiva in palpebral area, gelatinous thickened accumulation of tissue around limbus and presence of discrete whitish raised dots along the limbus (Trantas spots). Mixed form- Shows the features of both palpebral and bulbar types. Cause
VKC is thought to be an allergic disorder in which IgE mediated mechanism play a role. Such patients often give family history of other atopic diseases such as hay fever, asthma or eczema, and their peripheral blood shows eosinophilia and increased serum IgE levels. Risk factors
Age and sex – 4–20 years; more common in boys than girls.
Pud may refer to:

Pudding, a typically sweet food
Comic strip mascot for Dubble Bubble
A nickname of Albert Kent, a Canadian football coach and olympic rower
A nickname of Philip J. Kaplan, an American entrepreneur
Pud Galvin, a Hall of Fame Major League Baseball pitcher
Pood or pud, an old Russian unit of weight
slang shortened version of "pudendum"PUD can be an acronym for

Planned Unit Development
Public Utility District, a consumer co-op owned utility
Peptic Ulcer Disease