What is Blepharitis?

Blepharitis is a very common eyelid condition that affects many people of all ages^1^. It can result in the eyelids becoming inflamed, swollen or infected^1^. It can vary in severity, however it is generally not serious, or sight threatening^1^. Neither is it contagious^1^; in fact, some people won’t be aware they have it at all as they may not be symptomatic^1^.

Once diagnosed, the eyes will need regular management of the condition to avoid flare ups, as a one-off treatment option does not exist^1^.


The most common types of blepharitis are^2^:
Anterior blepharitis - affects the outside of the eyelid and the lashes (Fig. 1)
Posterior blepharitis - affects the moist inner edge of the lid margin that is in contact with the eye (Fig. 1)
Anterior blepharitis is caused either by bacteria known as staphylococcus or a skin condition known as seborrheic dermatitis^2^. Posterior blepharitis affects the oil glands within the eyelid (Meibomian glands) and is associated with skin conditions such as acne rosacea or seborrheic dermatitis^2^. 



1. Moorfields Eye Hospital NHS. Blepharitis. Available at: []
2. NHS. Blepharitis. (2016) Available at: []
3. NHS. Blepharitis – Complications. (2016) Available at: []
4. NHS. Blepharitis – Treatment. (2016) Available at: []


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