Atypical free-floating iridociliary pigmented epithelial cysts and secondary glaucoma in a caiman (Caiman latirostris).
caiman
endophthalmitis
enucleation
phthisis bulbi
retinal atrophy
uveal cysts
Journal
Veterinary ophthalmology
ISSN: 1463-5224
Titre abrégé: Vet Ophthalmol
Pays: England
ID NLM: 100887377
Informations de publication
Date de publication:
Jul 2021
Jul 2021
Historique:
revised:
19
01
2021
received:
28
09
2020
accepted:
27
01
2021
pubmed:
17
2
2021
medline:
3
11
2021
entrez:
16
2
2021
Statut:
ppublish
Résumé
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.
Types de publication
Case Reports
Langues
eng
Sous-ensembles de citation
IM
Pagination
414-418Informations de copyright
© 2021 American College of Veterinary Ophthalmologists.
Références
Taylor LN, Townsend WN, Heng HG, Stiles J, Moore GE. Comparison of ultrasound biomicroscopy and standard ocular ultrasonography for detection of canine uveal cysts. AJVR. 2015;76:540-546.
Blacklock BT, Grundon RA, Meehan M, Pont RT, Hartley C. Uveal cysts in domestic cats: a retrospective evaluation of thirty-six cases. Vet Ophthalmol. 2016;19(1):56-60.
Georgalas I, Petrou P, Papaconstantinou D, Brouzas D, Koutsandrea C, Kanakis M. Iris cysts: A comprehensive review on diagnosis and treatment. Surv Ophthalmol. 2018;63:347-364.
Gialletti R, Marchegiani A, Valeriani T, et al. A survey of ocular ultrasound abnormalities in horse: 145 cases. J Ultrasound. 2018;21:53-59.
Deehr AJ, Dubielzig RR. A histopathological study of iridociliary cysts and glaucoma in Golden Retrievers. Vet Ophthalmol. 1998;1:153-158.
Marigo FA, Finger PT, McCormick SA, et al. Anterior segment implantation cysts. Ultrasound biomicroscopy with histopathologic correlation. Arch Ophthalmol. 1998;116:1569-1575.
Shields JA. Primary cysts of the iris. Trans Am Ophthalmol Soc. 1981;79:771-809.
Orellana J, O’Malley RE, McPherson AR, Font RL. Pigmented free-floating vitreous cysts in two young adults. Electron microscopic observations. Ophthalmology. 1985;2:297-302.
Bruè C, Mariotti C, De Franco E, Giovannini F. Pigmented free-floating posterior vitreous cyst. Case Rep Ophthalmol Med. 2012;2012:1-3.
Yonekawa Y, Todorich B, Randhawa S. Free-floating pigmented vitreous cyst: optical coherence tomography findings. Ophthalmology. 2016;123:2041.
Oriá AP, Oliveira AVD, Pinna MH, et al. Ophthalmic diagnostic tests, orbital anatomy, and adnexal histology of the broad-snouted caiman (Caiman latirostris). Vet Ophthalmol. 2015;18:30-39.
Crocodile Specialist Group 1996. Caiman latirostris. The IUCN Red List of Threatened Species 1996: e.T46585A11062418. http://dx.doi.org/10.2305/IUCN.UK.1996.RLTS.T46585A11062418.en. Downloaded on 27 November 2019.
Rainwater TR, Millichamp NJ, Barrantes LD, et al. Ocular disease in american crocodiles (Crocodylus acutus) in Costa Rica. J Wildlife Dis. 2011;2:415-426.
Salman IA. Free-floating pigmented vitreous cyst. EJMO. 2017;49:155.
Pumphrey SA, Pizzirani S, Pirie CG, Needle DB. Glaucoma associated with uveal cysts and goniodysgenesis in American Bulldogs: a case series. Vet Ophthalmol. 2012;16:377-385.
Maslin JS, Teng CC, Materin M. Free-floating, pigmented cysts in the anterior chamber causing ocular hypertension. Ocul Oncol Pathol. 2016;2:239-241.
Spiess BM, Bolliger JO, Guscetti F, Haessig M, Lackner PA, Ruehli MB. Multiple ciliary body cysts and secondary glaucoma in the Great Dane: a report of nine cases. Vet Ophthalmol. 1998;1:41-45.
Werner JU, Lang GK, Enders C. Frei fluktuierende intraokulare zysten [Free-floating intraocular cysts]. Klin Monatsbl Augenh. 2017;235(9):1021-1027.
Ofri R. Intraocular pressure and glaucoma. Vet Clin North Am Exot Anim Pract. 2002;5:391-406.