Justification for reporting a case of free cyst in the anterior chamber lies only in the fact that the condition is rare. The literature and theories as to etiology have been well reviewed recently by Clapp1 and by Evans.2 Their publications include good illustrations of the gross and the microscopic structure. Evans found thirty-two reported cases of free cyst in the eyeball, but in only nineteen of these was the cyst in the anterior chamber; to this number he added a case of his own. At least two other cases3 have been described in foreign periodicals since 1928.
The type of cyst here considered is usually less than 2 mm. in its greatest diameter, globular or ovoid and semitransparent, with pigment granules scattered in or over its surface. The outer wall, or capsule, is extremely thin. The contents are clear and fluid. In a few cases the