Chalazion

Chalazion cystmeibomian gland
Chalazion is a cyst in the eyelid due to a blocked oil gland.wikipedia
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Cyst

cystscysticencyst
Chalazion is a cyst in the eyelid due to a blocked oil gland.
Chalazion cyst (eyelid)

Stye

hordeolumstyesexternal hordeolum
A chalazion may occur following a stye or from hardened oils blocking the gland.
A chalazion on the other hand is a blocked oil gland without infection.

Eyelid

eyelidspalpebralpalpebra
Chalazion is a cyst in the eyelid due to a blocked oil gland.
Chalazion (plural: chalazia) is caused by the obstruction of the oil glands and can occur in both upper and lower eyelids. Chalazia may be mistaken for styes due to the similar symptoms. This condition is however less painful and it tends to be chronic. Chalazia heal within a few months if treatment is administered and otherwise they can resorb within two years. Chalazia that do not respond to topical medication are usually treated with surgery as a last resort.

Blepharitis

blephartiseyelidsgranulation of the eyelids
Of course, as surgeries are intrusive and damage healthy tissue (e.g., leaving behind scar tissue or possibly even causing blepharitis), given other options, less intrusive treatment is always preferable.
Long-term untreated blepharitis can lead to eyelid scarring, excess tearing, difficulty wearing contact lenses, development of a stye (an infection near the base of the eyelashes, resulting in a painful lump on the edge of the eyelid) or a chalazion (a blockage/bacteria infection in a small oil glands at the margin of the eyelid, just behind the eyelashes, leading to a red, swollen eyelid), chronic pink eye (conjunctivitis), keratitis, and corneal ulcer or irritation.

Meibomian gland

meibomian glandsmeibomian gland dysfunctiontarsal glands
The blocked gland is usually the meibomian gland but can also be the gland of Zeis.
Chalazion

Warm compress

warm compresseswarm moist compress
Treatment is initiated with warm compresses.
stye or chalazion

Sebaceous gland

sebumsebaceous glandssebaceous
Chalazion is a cyst in the eyelid due to a blocked oil gland.

Gland of Zeis

glands of ZeisZeiszeis gland
The blocked gland is usually the meibomian gland but can also be the gland of Zeis.

Periorbital cellulitis

cellulitisinfectious eye conditionperiorbit
A stye and cellulitis may appear similar.

Steroid

steroidssteroidogenesisbiosynthesis of steroids
If this is not effective injecting steroids into the lesion may be tried.

Incision and drainage

lancinglancedclinical lancing
If large, incision and drainage may be recommended.

Astigmatism

against the rule astigmatismastigmaticastigmatic myopic
A large chalazion can cause astigmatism due to pressure on the cornea.

Laser surgery

laser eye surgerylaserlaser scalpel
As laser eye surgery involves shaping the cornea by burning parts of it away, weakening its structure, post-operation patients can be left predisposed to deformation of the cornea from small chalazia.

Hypopigmentation

hypopigmenteddecreased pigmentation of the skindiminished melanin formation
Complications including hypopigmentation may occur with corticosteroid injection.

Curette

curettagecurettes
The eyelid is injected with a local anesthetic, a clamp is put on the eyelid, then the eyelid is turned over, an incision is made on the inside of the eyelid, and the chalazion is drained and scraped out with a curette.

Antibiotic

antibioticsantibacterialantibacterials
Topical antibiotic eye drops or ointment (e.g., chloramphenicol or fusidic acid) are sometimes used for the initial acute infection, but are otherwise of little value in treating a chalazion.

Chloramphenicol

chloromycetin8chloramphenicolchloramphenicol succinate
Topical antibiotic eye drops or ointment (e.g., chloramphenicol or fusidic acid) are sometimes used for the initial acute infection, but are otherwise of little value in treating a chalazion.

Fusidic acid

fucidinfusidate
Topical antibiotic eye drops or ointment (e.g., chloramphenicol or fusidic acid) are sometimes used for the initial acute infection, but are otherwise of little value in treating a chalazion.

Local anesthesia

regional anesthesialocal anaesthesialocal
If they continue to enlarge or fail to settle within a few months, smaller lesions may be injected with a corticosteroid, or larger ones may be surgically removed using local anesthesia.

Epidermis

epidermalrete ridgesepidermal cells
Eyelid epidermis usually mends well, without leaving any visible scar.

Scar

scarringscar tissuescars
Eyelid epidermis usually mends well, without leaving any visible scar.

Pus

purulentsuppurationpyogenic
Depending on the chalazion's texture, the excision procedure varies: while fluid matter can easily be removed under minimal invasion, by merely puncturing the chalazion and exerting pressure upon the surrounding tissue, hardened matter usually necessitates a larger incision, through which it can be scraped out.

Hematoma

haematomahematomasbruises
The excision of larger chalazia may result in visible hematoma around the lid, which will wear off within three or four days, whereas the swelling may persist for longer.

Biopsy

biopsiestissue biopsybiopsied
Chalazia may recur, and they will usually be biopsied to rule out the possibility of a tumour.

Anesthesia

anaesthesiaanestheticanesthetized
Chalazion removal surgery is performed under local or general anesthesia.