Fig. 22. UBM features of primary neuroepithelial cysts of iris and ciliary body. A. Primary neuroepithelial cyst of iris midzone. B. Primary neuroepithelial cyst of iridociliary sulcus. C. Multiple neuroepithelial cysts of peripheral iris and ciliary body. D. Neuroepithelial cysts of pars plana of ciliary body shown in circumferential slice.