Spontaneous Nonpigmented Iris Cysts

摘要: EPITHELIAL cysts arising spontaneously in the iris are classified two groups—intra-epithelial and stromal. 1 The intra-epithelial made up of pigmented epithelium, they regarded as remnants von Szily's marginal sinus that have not been obliterated. 2-3 stromal situated within stroma lined by nonpigmented epithelium. latter may be multilayered contain goblet cells. origin these is still controversial. 2-5 Some observers hold opinion arise from surface ectoderm displaced, probably, at time formation lens vesicle. 6-8 Others 9-12 believe develop aberrant cells most anterior portion optic vesicle whiel it unpigmented. histopathologic features such excised iridectomy illustrated repeatedly, 1,7-9, 13-18 but we found only one report describing