Anterior vs. Posterior Blepharitis and Demodex

[BigNate]

Hello Everyone,

I have a question I hope someone can help me with: Can Demodex mites cause or accompany MGD or are they only present in anterior blepharitis? Thanks!

[hankm9]

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[BigNate]

Hank,

Thanks for the clarification and clear breakdown. This helps me a lot! (or at least gets me one step closer)

There are two species of mites found in human eylashes:

D. Folliculorum which is found at the base of the lashes. Usually easy to to detect and they cause anterior Blepharitis.

D. Brevis which burrows much deeper in oil & sebaceous glands where they feed on oil & sebum. They have been observed living inside meibomian glands individually and can cause blockage of the orifice leading to posterior Blepharitis & MGD.