Bilateral phacoemulsification and custom made IOL implant in Howler Monkeys.

Fonte: A. Kuner, J.A. Kleiner, R.E. Fernandes and R. Nudellman.

Howler Monkeys next day of the surgery.
   Howler Monkeys next day of the surgery.

Purpose: This case report intends to document cataract surgeries performed in 4 howler monkeys (Alouatta fusca and Alouatta caraya). Methods: Phacoemulsification was performed on 4 animals. One patient was a 4 months old Alouatta fusca, male, orphan, rescued individual with vision loss due to bilateral mature cortical cataracts. The other three were a 3 year-old Alouatta caraya, orphans totally blind due to a nutritional mature cataract. A complete ophthalmic exam, electroretinogram and a B-mode scan ocular ultrasonography was conducted on all animals and revealed no evidence of retinal diseases. No lens instability or clinically important lens-induced uveitis was noted. Cataract surgery was planned and performed at two different practices. The Alouatta fusca was performed by one surgeon, one eye at a time and the three Alouatta carayas by another surgeon both eyes at the same time on the same say. Intraocular lenses (IOLs) were implanted and no complications during the procedure were noticed. The intraocular lenses were custom made and their specifications calculated by ocular ultrasonography and corneal curvature measurements. Results: All animals regained vision on the next day after the procedure and no major complications observed in one year followed up period. Conclusions: To the authors knowledge this is the first report on phacoemulsification and IOLs implantation in howler monkeys. These species are among endangered ones and considering the successful procedures and visual rehabilitation they were released into the wild. Article presented during the 46th ACVO congress in Idaho, USA (October 8th, 2015).


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