Wednesday, November 02, 2005

Two Types of Blepharitis


Blepharitis is one of the most common problems of the eyes. It is inflammation of the margins of the eyelid. It often lasts for a long time and often recurs. It's inconvenient and unattractive but not usually destructive. Occasionally, however, it can cause loss of eyelashes and damage to the eye itself.
There are two types of blepharitis, anterior and posterior. Both are common.
Anterior blepharitis usually involves the eyelid, eyelashes and surrounding glands. It can be caused by a staph infection or seborrheic dermatitis of the scalp, brows or ears. Recent studies have found large numbers of a parasite called demodex in people with blepharitis. But the majority of people with this parasite do not have the condition.
Posterior blepharitis is an inflammation of the back of the eyelid, usually resulting from a problem with the sebaceous glands that secrete oil in the area. It is also associated with acne rosacea.
In addition to seborrhea and rosacea, other diseases that may cause blepharitis are lupus erythematosus, Sjogren's and Crohn's disease. It's important to look for symptoms of these diseases when evaluating someone with blepharitis.
Blepharitis stubbornly resists treatment. Available treatment often does not fully cure this condition but rather is directed at getting it under control and fighting flare-ups.
The main approach to treatment is twice-daily cleaning of the eyelids and application of warm compresses. Commercial eyelid scrubs are available and may be easier to use, but baby shampoo has been a mainstay of treatment for a long time.
Antibiotic ointments may be helpful when applied daily to the lid margins. If the eye surface itself becomes infected, oral antibiotics may be required. It is a good idea to sample the secretions on the eye to test for microorganisms and their sensitivity to antibiotics.
Topical steroids may help some people treat their blepharitis. But prolonged use of these medications may result in other eye problems. So, if steroids are used, it's important to discuss with the prescribing physician how often and how long to use them. Please discuss and write down the potential problems that may occur and what to do immediately if that happens.