Inflammation of the eyelids. The most common of these is marginal blepharitis.
See meibomian glands;
external hordeolum.
angular blepharitis Inflammation of the canthi, affecting especially the inner canthus.
marginal blepharitis Chronic inflammation of the eyelid margin accompanied by crusts or scales usually due to a bacterial infection (e.g.
Staphylococcus aureus), an allergy, or to excessive secretion of lipid by the meibomian glands and the glands of Zeis (
seborrhoeic blepharitis). The condition is commonly associated with keratoconjunctivitis sicca. Symptoms and signs include burning, itching, grittiness, and the eyelid is hyperaemic and crusted and usually worse in the morning. Treatment consists mainly of frequent cleaning of the lid margins with a cotton-tipped applicator (or face cloth or cotton ball) dipped in a diluted solution of baby shampoo; warm compresses and an antibiotic ointment (e.g. erythromycin) and occasionally systemic antibiotics such as tetracycline, especially in seborrhoeic blepharitis. In complicated cases, corticosteroids will also be used (Fig. B3).
See acne rosacea;
meibomian glands;
glands of Zeis;
meibomianitis;
trichiasis.
posterior blepharitis Chronic inflammation resulting from dysfunction of the meibomian glands characterized either by excessive meibomian secretion (
seborrhoeic blepharitis), which is frequently associated with seborrhoeic dermatitis involving the scalp, brows and ears, or inflammation and obstruction of the meibomian glands (
meibomianitis).
seborrhoeic blepharitis See marginal blepharitis.
ulcerative blepharitis Inflammation of the eyelid margin characterized by small ulcers.


Fig. B3 Hard scales in staphylococcal blepharitis