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internal hordeolum

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hordeolum
inflammation of one or more sebaceous glands of the eyelid.

external hordeolum
involves the glands of Zeis and Moll, forming an abscess on the eyelid margin. Called also sty.
internal hordeolum
involves the meibomian glands. See also chalazion.

hordeolum, internal
An acute purulent infection (usually caused by staphylococci) of the meibomian glands. It usually causes more discomfort than an external hordeolum as it is located on the conjunctival side of the eyelid. Treatment is similar to that of external hordeolum but surgical incision is required more frequently. Syn. meibomian stye. See chalazion; meibomianitis.


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The term external hordeolum has been used to refer to a sty that develops at the base of an eyelash involving a hair follicle of the eyelid, whereas the term internal hordeolum refers to a sty arising due to blocked meibomian glands in the eyelid.
 
 
 
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