Pseudoduplication of the optic disk

Abstract

Purpose: The purpose of this study was to report a case of a chorioretinal coloboma mimicking a second optic disk in an asymptomatic 12-year-old boy.

Methods: This is a case report.

Results: An asymptomatic 12-year-old boy presented with a chorioretinal coloboma of the right eye giving the impression of a second optic disk. The patient also had a superior visual field defect.

Conclusion: True optic nerve duplication is a rare entity that can be mimicked by other etiologies, including choroidal colobomas and postinflammatory lesions, requiring careful examination by clinicians.