Corpus ID: 25906846; Demodex folliculorum and Demodex brevis as a cause of chronic marginal blepharitis. @article{Czepita2007DemodexFA, title={Demodex folliculorum and Demodex brevis as a cause of chronic marginal blepharitis.}, author={Damian Czepita and Wanda Kuźna-Grygiel and Maciej Czepita and Andrzej Grobelny}, journal={Annales Academiae Medicae Stetinensis}, year={2007}, volume={53 1 Blepharitis is currently recognised as one of the most widespread ocular conditions. It affects people of all ages, ethnicities, and gender but is more common in individuals older than the age of the cornea. This is called marginal keratitis. What are my treatment options? bud to gently clean the inside edge of Lid hygiene - this treats the blepharitis which causes marginal keratitis. You should carry out good 'lid hygiene' once or twice a day (even when you do not have any symptoms), to prevent marginal keratitis from recurring. 1 - direct bacterial infection/ overgrowth. 2 - hypersensitivity to exotoxins produced by thee microbes found on lid margin. 3- delayed cell-mediated immune hypersensitivty response. what can lead to the release of proinflammatory cytokines. combination of increased exotoxins and bacterial antigens. What are the 3 categories of blepharitis.