A chalazion is a granulomatous inflammatory lesion that forms in an obstructed meibomian gland.
Unlike hordeola, chalazion are non-infectious. Chalazion are often associated with blepharitis and acne rosacea.
Chalazia present as painless red eyelid cysts in the internal eyelid
If chalazia are infected, they become internal hordeolum.
A chalazion and external hordeolum can be easily distinguished as chalazia are not painful or tender to touch. In contrast, an external hordeolum is associated with pain
Chalazia often resolve spontaneously. Patients should be encouraged to perform warm compression of the eyelid (to loosen meibomian gland content) and eyelid massage (to express meibomian gland content) twice a day.
A persistent chalazion requires referral to ophthalmology for consideration of incision and curettage.