Homonymous Sectoranopia: Asymptomatic Presentation of a Lateral Geniculate Nucleus Lesion

Abstract

This is a rare presentation of brain tumour in the region of the lateral geniculate nucleus (LGN) presenting as a homonymous horizontal sectoranopia (HHS). The case highlights that subtle field defects can be asymptomatic and only detected by formal perimetry. Although homonymous sectoranopia is a rare form of visual field defect, it should be recognised as a potential manifestation of potentially significant intracranial pathology.

• Homonymous horizontal sectoranopia
• glioma
• lateral choroidal artery
• lateral geniculate nucleus

Acknowledgements

We would like to thank Mrs. Debora Gibson for her secretarial assistance.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.