Microbiological study of chronic blepharitis

One hundred forty cases of chronic blepharitis were studied, as well as 25 normal controls. They were all evaluated ophthalmologically, microbiologically and dermatologically. It was found that blepharitis can be classified, depending on the cause, into five main groups: seborrheic, ifective, mixed seborrheic-infective, meibomian and unclassified group, A significant role was found for external irritants, prolonged exposure to strong sun, unhygienic surroundings, insufficient sleep and ocular cosmetic. It was also found that bacteria and fungi have no primary role in the pathogenesis of chronic blepharitis