Staphylom

Ocular
ultrasonography focused on the posterior eye segment: what radiologists should know. Comparative study in a woman with anisometropia in long-standing myopia in the right eye. a. Longitudinal US shows the lengthened anteroposterior axis of the right eye, with a pear-shaped posterior pole sacculation known as a staphyloma (arrow). b Compare with the normal left globe
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Staphyloma is the term given to an eye whose scleral-uveal coats are stretched with uveal protrusion. This most commonly occurs posteriorly, although anterior staphyloma also is recognized. As opposed to coloboma, staphyloma defect is located off-center from the optic disc, typically temporal to the disc .

Clinical presentation

Patients often present with severe axial myopia.

Pathology

It is an acquired defect secondary to weakness and thinning of the scleral-uveal coats.

Posterior staphyloma
  • progressive myopia (or mega myope) is the 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

Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Staphylom:
Neurofibromatose
Typ 1
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