Table 2.

Differentiating features of vernal and atopic keratoconjunctivitis

	VKC	AKC
VKC: vernal keratoconjunctivitis AKC: Allergic keratoconjunctivitis
Age	Young	Old
Sex	Males > Females	Equal ratio
Season	Spring	Perennial
Duration	Limited	Chronic
Skin involvement	No	Yes, extra lid fold, maceration of canthi
Punctal stenosis	No	Yes
Conjunctiva	Upper tarsal conjunctiva	Lower tarsal conjunctiva
Conjunctival scarring	Rare	Common
Cornea	Shield ulcer	Epithelial defects
Scarring	Peripheral	Central
Vascularisation	Rare	Common