Staphyloma
A staphyloma is the term given to an eye whose sclero-uveal coats are stretched (also known as ectasia). This most commonly occurs posteriorly, athough anterior staphyloma also is recognised.
Posterior staphyloma
- progressive myopia (or mega myope) most common cause.
- glaucoma
- scleritis
- necrotizing infection
- surgery / trauma
- radiotherapy)
Anterior staphyloma
Seen seconday to inflammation or infection of the sclero-corneal lining of the eye.
Radiographic features
- increased eye size
- focal deformity (not as marked as coloboma) : usually posterior
- non-enhancing uveo-sclera
Differential diagnoses
- buphthalmos (congenital glaucoma)
- axial myopia
- macrophthalmos : seen in neurofibromatosis type 1 (NF1)
- coloboma
