Blepharitis

The eyelid margin is commonly known as the edge of the upper and lower eyelids. Blepharitis is an inflammation of the eyelid margin surface and the base of the eyelashes (including hair follicles and surrounding glandular tissues) caused by bacterial infection, predominantly chronic inflammation. It is a common ocular surface skin disease. It can be divided into the following three types: Squamous blepharitis: A chronic inflammation caused by seborrhea of the eyelid margin. Ulcerative blepharitis: Essentially a purulent inflammation of the eyelash follicles. Angular blepharitis: Inflammation located at the outer canthus (outer corner of the eye). The main symptoms include itchy and stinging eyes, hyperemia and swelling of the eyelid margin skin, misdirected, falling out, or ingrown eyelashes. The symptoms vary among different types of blepharitis.