INTRODUCTION The widespread prevalence of blepharitis marginalis, described by Duke-Elder1 as "a subacute or chronic inflammation of the margins of the lids," is well known. Its etiology is both complex and manifold and has not been conclusively defined.
INTRODUCTION Classically, this condition can be divided into two broad categories: (1) simple squamous blepharitis and (2) ulcerative blepharitis. The first reflects hyperemia, congestion, and edema of the lid margins with a consequent scaling of the lids. The latter involves the ciliary follicles and associated sebaceous glands of Zeis and sweat glands of Moll. At first, suppurative abscesses develop intrafollicularly, followed by more extensive destructive inflammation and subsequent scarring.
INTRODUCTION The usual complications which follow include chronic conjunctivitis, hordeolum, chalazion, ectropion, entropion, trichiasis, and keratitis.
INTRODUCTION The principal causes to which blepharitis has been attributed * may be classified as those stemming from (1) predisposing factors, including eyestrain, metabolic disorder, vitamin deficiency, and heredity; (2)
WONG AS, FASANELLA RM, HALEY LD, MARSHALL CL, KREHL WA. Selenium (Selsun) in the Treatment of Marginal Blepharitis. AMA Arch Ophthalmol. 1956;55(2):246-253. doi:10.1001/archopht.1956.00930030250011