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Staphyloma is the term given to an eye whose sclero-uveal coats are stretched (also known as ectasia). This most commonly occurs posteriorly, although anterior staphyloma also is recognised. As opposed to coloboma,staphyloma defect is located off-center from the optic disc, typically temporal to the disc 3.


It is an acquired defect secondary to weakness and thinning of the scleraluveal coats 3.

Clinical presentation

 Patients often present with severe axial myopia 3.

Posterior staphyloma
  • progressive myopia (or mega myope) most common cause.
  • glaucoma
  • scleritis
  • necrotizing infection
  • surgery/trauma
  • radiotherapy
Anterior staphyloma

Seen secondary 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 diagnosis

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