Open Veterinary Journal

Open Veterinary Journal

Peer-Reviewed Journal 
ISSN 2218-6050 (Online), ISSN 2226-4485 (Print) 

"Case Report"

Bilateral cataracts extraction by lens aspiration and foldable intraocular lens implantation in a black kite (Milvus migrans)


Natthanet Sritrakoon(1), Kaset Sutasha(2), Chaiyan Kasorndorkbua(3), Winyu Karntip(1), Noppasin Jindawattana(1) and Aree Thayananuphat(4*)


1- Ophthalmology Unit, Kasetsart University Veterinary Teaching Hospital, Bangkok, 10900, Thailand

2- Exotic Clinic, Kasetsart University Veterinary Teaching Hospital, Bangkok, 10900, Thailand

3- Department of Pathology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, and Raptor Rehabilitation Unit, Kasetsart University Veterinary Teaching Hospital, Kamphaengsaen, Nakhon Pathom, Thailand

4- Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand

Abstract

Background: Cataract is a common disease in the lenses of birds. Cataract surgery is the recommended treatment for birds with visual impairment. Nevertheless, reports of the results of cataract surgery in birds are limited.

Case Description: An unknown-aged male black kite (Milvus migrans) was presented to Kasetsart University Veterinary Teaching Hospital to evaluate and treat bilateral ocular cloudiness. Bilateral hypermature cataracts were diagnosed. A-scan biometry was performed to calculate the intraocular lens diopter power. Bilateral cataract extraction by lens aspiration with +17.5 diopter foldable intraocular lens implantation was successfully completed. Two months after surgery, the black kite navigated well and could fly and catch his food. Retinoscopy at 4 months postoperative revealed -0.5 diopters OD, whereas OS could not be assessed due to a poor reflection. Follow up at 3 years after surgery, the black kite’s vision remained favorable.

Conclusion: Phacoemulsification and intraocular lens (IOL) implantation was successful in this black kite because the black kite’s vision was noticeably improved, and the black kite was able to navigate well. To the authors’ knowledge, this is the first report of bilateral cataract surgery with intraocular lens implantation using a calculated dioptric power (+17.5 D) IOL in a black kite.

Keywords: Biometry, Black kite, Cataract, Intraocular lens (IOL), Milvus migrans.

Cite this paper:

Sritrakoon, N., Sutasha, K., Kasorndorkbua, C., Karntip, W., Jindawattana, N. and Thayananuphat, A. 2021. Bilateral cataracts extraction by lens aspiration and foldable intraocular lens implantation in a black kite (Milvus migrans). Open Vet. J. 11(3), 441-446.