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Table 1 Other ocular allergic subtypes and their main characteristics

From: A contemporary look at allergic conjunctivitis

Ocular allergy subtype

Demographics and/or associations

Primary symptoms and signs

Atopic keratoconjunctivitis (AKC) [10, 15, 18]

Male predominance, 30–50 years of age

Perennial, with potential exacerbation in the winter months

Association with atopic dermatitis of the eyelids

Severe ocular itching (ocular surface, eyelids)

Tearing, burning, photophobia, mucous discharge

Significant hyperemia and edema of the conjunctiva (chronic inflammation)

Corneal scarring, neovascularization

Trantas’ dots

Large cobblestone papillae on superior tarsus and/or limbus (chronic inflammation)

Vernal keratoconjunctivitis (VKC) [10, 15, 18]

Male predominance, 3–25 years of age

Associated with atopy in 50%

Severe ocular itching

Photophobia, tearing mucous discharge

Trantas’ dots (limbal form)

Large cobblestone papillae on superior tarsus and/or limbus (chronic inflammation)

Corneal ulcer (shield) may form in severe cases