Protein filled cysts of the ciliary epithelium are found in five patients with hypergammaglobulinemia but without evidence of multiple myeloma. The findings indicate that proteinaceous ciliary cysts are not unique to multiple myeloma and may be found in a variety of conditions with increased levels of immunoglobulin.
Johnson BL. Proteinaceous Cysts of the Ciliary EpitheliumII. Their Occurrence in Nonmyelomatous Hypergammaglobulinemic Conditions. Arch Ophthalmol. 1970;84(2):171-175. doi:10.1001/archopht.1970.00990040173009