Anterior Segment Implantation Cysts

Abstract

CYSTIC LESIONS occurring within the anterior segment may be classified as primary or secondary.¹ Primary cysts are of neuroepithelial origin, while secondary cysts occur as the result of implantation, metastatic or parasitic lesions, or after long-term use of miotics.¹ Implantation cysts result from implantation of epithelial cells on the iris after penetrating or surgical trauma, which may lead to a solid (pearl) mass, a fluid-filled (serous) cyst, or epithelial ingrowth.^1-6 Such lesions can, in turn, cause corneal edema, uveitis, glaucoma, and decreased visual acuity.^1-3,5-7