Posterior Staphyloma
Introduction:
Posterior staphyloma occurs in the setting of high myopia (axial length >26 mm) as a result of progressive anteroposterior elongation of the globe over time with scleral thinning in the posterior pole.
Clinical Features:
Externally, the globe itself may appear elongated, which is consistent with high myopia. On fundoscopy, there are associated atrophic changes of the retina, retinal pigment epithelium, and choroid in the posterior pole (Fig. 9.1.1). A teacup-like deformity is present, typically within the macula, but can also involve the optic nerve. The deformity can be difficult to appreciate clinically and requires stereopsis to appreciate.
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