What is vernal conjunctivitis?
Vernal conjunctivitis is long-term (chronic) swelling (inflammation) of the outer lining of the eyes. It is due to an allergic reaction.
What is atopic keratoconjunctivitis?
Atopic keratoconjunctivitis is a chronic (long-lasting) allergic condition of the eyelids and front surface of the eye. It affects many patients who have the skin condition, atopic dermatitis.
What are Herbert pits?
Trachoma infection causes follicular conjunctivitis, sometimes involving the cornea and limbus. When infectious follicles heal, they are replaced by rounded, depressed, or flat scars (ie, Herbert pits) as seen in this patient.
What is ropy discharge?
Discharge Associated with Conjunctivitis A mucoid (stringy or ropy) discharge is highly characteristic of allergy or dry eyes. A muco-purulent or purulent discharge, often associated with morning crusting and difficulty opening the eyelids, strongly suggests a bacterial infection.
What is conjunctival Cobblestoning?
VKC symptoms include inflammation of the outer membrane of the eye. This causes the eyes to become red and may cause blurred vision. The eyes become sensitive to light and itch intensely. Usually both eyes are affected, and cobblestone-like changes appear in the upper eyelid linings (palpebral conjunctiva).
What is cobblestone eye?
People with VKC often have a white, ropy discharge and appear to have ptosis, a condition in which the eyelids hang down lower than normal. The underside of the eyelids will also have large bumps called papillae and redness. Doctors may refer to it as looking like a cobblestone appearance.
What causes keratoconjunctivitis?
Keratoconjunctivitis is a group of inflammatory eye conditions involving the cornea and the conjunctiva. Allergies, viruses, and bacteria are among the causes. Some types are associated with congenital or autoimmune disorders. There are steps you can take to relieve symptoms.
How long does keratoconjunctivitis last?
Epidemic keratoconjunctivitis (also sometimes referred to as viral keratoconjunctivitis) is a highly contagious viral infection of the eye. Symptoms can last up to two weeks or more. It is caused by adenoviruses and there is no specific treatment.
What is blepharitis?
Blepharitis (blef-uh-RYE-tis) is inflammation of the eyelids. Blepharitis usually affects both eyes along the edges of the eyelids.
What is phlyctenular keratoconjunctivitis?
Phlyctenular keratoconjunctivitis is a nodular inflammation of the cornea or conjunctiva that arises from a hypersensitivity response to a foreign antigen.
What are phlyctenules (blister nodules)?
These “phlyctenules,” are derived from “phlyctena,” the Greek word for “blister.” The blister characterization was likely chosen due to the tendency for the nodules to ulcerate once necrosis occurs. Histopathologically, phlyctenules are subepithelial inflammatory nodules containing histiocytes, lymphocytes, plasma cells, and neutrophils.
What is the pathophysiology of corneal phlyctenules?
Corneal phlyctenules likewise start along the limbal area and often deteriorate to corneal ulcer and neovascularization. In some instances, the phlyctenule will progress throughout the corneal surface due to repeated episodes of inflammation along the central edge of the lesion.