Unit 2: Visual field defects, double vision & optic disc swelling

• Usually cause bitemporal superior quadrantanopia.
• The defects are usually relative and respect the vertical midline but not the horizontal midline.
• It is often asymmetric and eventually produces optic neuropathy.
• As the tumour enlarges it compressors more fibres and the visual field defect gets bigger.

Bitemporal superior quadrantanopia