Atypical free-floating iridociliary pigmented epithelial cysts and secondary glaucoma in a caiman (Caiman latirostris)

Arianne Pontes Oriá*, Alessandra Estrela-Lima, Leandro B.C. Teixeira, Richard R. Dubielzig, Ron Ofri

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We describe a case of chronic ocular trauma that resulted in fixed and free-floating, pigmented epithelial iridociliary cysts, inflammation, and secondary glaucoma in a caiman (Caiman latirostris). A 20- to 25-year-old male caiman was presented with phthisis bulbi in the right eye, and congested episcleral vessels, corneal leukoma, disorganized anterior chamber, multifocal anterior synechia, and elevated intraocular pressure in the left eye. Ocular ultrasound of the left eye revealed round structures dispersed in the anterior and posterior chambers and vitreous cavity. Bilateral enucleation was performed, and gross pathology of the left eye revealed multiple pigmented cysts attached to the iris and posterior corneal surface causing marked distortion of the anterior uvea, and free-floating in the vitreous cavity. Histopathology demonstrated heavily pigmented cystic structures of iridociliary epithelium origin carpeting the anterior segment surfaces and causing obstruction of the iridocorneal angles, leading to secondary glaucoma. To the authors’ knowledge, this is the first report of iridociliary cysts in wildlife species.

Original languageAmerican English
Pages (from-to)414-418
Number of pages5
JournalVeterinary Ophthalmology
Volume24
Issue number4
DOIs
StatePublished - Jul 2021

Bibliographical note

Publisher Copyright:
© 2021 American College of Veterinary Ophthalmologists

Keywords

  • caiman
  • endophthalmitis
  • enucleation
  • phthisis bulbi
  • retinal atrophy
  • uveal cysts

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