Staphyloma refers to a bulging of the sclera in which the underlying uveal tissue in the bulge is also thinned or degenerated. By far the most common form is posterior staphyloma in severe myopia, a bulging of the entire posterior pole of the eyeball (Fig. 6.1). Staphyloma can also occur secondary to scleritis (see Fig. 6.4).
Ectasia is a thinning and bulging of the sclera without uveal involvement, as can occur secondary to inflammation.
Both staphyloma and ectasia are secondary or incidental findings. No treatment is available.
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