Intraocular nematodiasis caused by Parelaphostrongylus tenuis in an eland antelope (Taurotragus oryx).

A 10-mo-old female eland (Taurotragus oryx) at the Wilds exhibited recalcitrant, progressive unilateral uveitis for a 5-wk period, despite constant medical treatment. Unilateral enucleation was performed because of blindness and animal discomfort evidenced by continuous blepharospasm. Histopathologic examination of the eye demonstrated intraocular larvae morphologically consistent with Parelaphostrongylus tenuis, the first known case of intraocular P. tenuis migration. This animal subsequently was euthanatized because of severe, nonresponsive neurologic signs associated with P. tenuis infection.