Posterior Blepharitis

Posterior blepharitis is type of blepharitis that occurs in the posterior or back margin of the eye lid.

There are special glands at the posterior margin of the eyelid called meibomian glands which secret lipid into the anterior surface of the eye and it is a component of eye tears.

This type of blepharitis is mainly related to meibomian gland dysfunction. With time these secretions will block the orifice of these glands and the stagnant material becomes a good growth medium for the bacteria to live causing eyelid inflammation and infection.

Causes

In which there is excessive lipid secretion and these lipids will be deposited on the posterior margin of the eyelid.

It is usually associated with acne rosacea which is associated with pustules, rhinophyma (red swollen nose), telangiectasia (diluted vessels of the skin, nose or eyelid) and erythema of the skin and eyelid margins.

2- Meibomianitis.

In meibomitis there will be infection or inflammation of these glands with obstruction of ducts.

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