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Updated: Jun 8, 2026

Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries
Published on: July 7, 2023
Bilateral phacoemulsification in an orangutan (Pongo pygmaeus)
Fabiano Montiani-Ferreira1, Leandro Lima, Marianna Bacellar
1Universidade Federal do Paraná (UFPR), Rua dos Funcionários, 1540, 80035-050, Curitiba, PR, Brazil. montiani@ufpr.br
Abstract:
A 14-year-old, female, captive-born orangutan (Pongo pygmaeus) developed bilateral cataracts. Ultrasonography, electroretinography and cataract correction using phacoemulsification were performed bilaterally. This case report aims to describe the ophthalmic procedures performed in this animal critically endangered of extinction. The surgery successfully restored vision and normal activity to the patient.
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