VERNAL KERATOCONJUNCTIVITIS

vernal keratoconjunctivitis (vkc) or spring catarrh
It is a recurrent, bilateral, interstitial, self-limiting, allergic inflammation of the conjunctiva having a periodic seasonal incidence.

Etiology
It is considered a hypersensitivity reaction to some exogenous allergen, such as grass pollens. VKC is thought to be an atopic allergic disorder in many
cases, in which IgE-mediated mechanisms play an important role. Such patients may give personal or family history of

OPHTHALMIA NEONATORUM

Ophthalmia neonatorum is the name given to bilateral inflammation of the conjunctiva occurring in an infant, less than 30 days old. It is a preventable disease usually occurring as a result of carelessness at the time of birth. As a matter of fact any discharge or even watering from the eyes in the first week of life should arouse suspicion of ophthalmia neonatorum, as tears are not formed till then.
Etiology
Source and mode of infection
Infection may occur in three ways: before birth, during birth or after birth.

1. Before birth infection is very rare through infected liquor amnii in mothers with ruptured membrances.

2. During birth. It is the most common mode of infection from the

CHRONIC FOLLICULAR CONJUNCTIVITIS

Chronic follicular conjunctivitis is a mild type of chronic catarrhal conjunctivitis associated with follicular hyperplasia, predominantly
involving the lower lid.

Etiological types
1. Infective chronic follicular conjunctivitis is essentially a condition of 'benign folliculosis' with a superadded mild infection.
Benign folliculosis, also called 'School folliculosis', mainly affects school children. This condition usually occurs as a part of generalized
lymphoid