Phlyctenular keratitis.

Corneal involvement may occur secondarily from extension of conjunctival
phlycten; or rarely as a primary disease. It may present in two forms: the 'ulcerative phlyctenular keratitis' or 'diffuse infiltrative keratitis'.

A. Ulcerative phlyctenular keratitis may occur in the following three forms:
1. Sacrofulous ulcer is a shallow marginal ulcer formed due to breakdown of small limbal phlycten. It differs from the catarrhal ulcer in that there is no clear space between the ulcer and the limbus and its

Atopic keratoconjunctivitis (AKC)

Atopic  keratoconjunctivitis (AKC) can be thought of as an adult equivalent of vernal keratoconjunctivitis and is often associated with atopic dermatitis. Most of the patients are young atopic adults, with male predominance.

Symptoms include:

• Itching, soreness, dry sensation.
• Mucoid discharge.
• Photophobia or blurred vision.

Signs

• Lid margins are chronically inflamed with

VIRAL CONJUNCTIVITIS

Most of the viral infections tend to affect the epithelium, both of the conjunctiva and cornea, so, the typical viral lesion is a 'keratoconjunctivitis'. In some viral infections, conjunctival involvement is more prominent (e.g., pharyngo-conjunctival fever), while in others cornea is more involved (e.g., herpes simplex).

Viral infections of conjunctiva include:

• Adenovirus conjunctivitis
• Herpes simplex keratoconjunctivitis
• Herpes zoster conjunctivitis
• Pox virus conjunctivitis
• Myxovirus conjunctivitis
• Paramyxovirus conjunctivitis
• ARBOR virus conjunctivitis

Clinical presentations. Acute viral conjunctivitis may
present in