Hordeolum internal

Penicillins resistant to penicillinase can be used to treat ocular infections. An internal hordeolum, which is an infection of a meibomian gland typically with staphylococci, can be treated with oral dicloxacillin when the hordeolum is severe or not resolving with more conservative treatment. 

An internal hordeolum is a localized staphylococcal infection of the meibomian glands. The infection may result from blockage of the gland and is foimd more frequently in the upper lid. A specific change in meibomian gland secretion has been linked to internal hordeolum formation. 

Figure 23-12 Small internal hordeolum of the upper eyeUd (arrotu). (Courtesy Dr. Katrina Parker, University of Houston, College of Optometry.)...

Preseptal or periorbital cellulitis is an infectious process involving lid structures anterior to the orbital septum. The condition generally occurs due to one of three clinical scenarios (1) secondary to a localized infection or an inflammation of the eyelids or adjacent structures (i.e., sinusitis, conjunctivitis, blepharitis, and/or internal hordeolum), (2) secondary to eyelid or fecial trauma, and (3) after an upper respiratory tract infection. 

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