Child health · UKMLA & AKT
Quadrantanopia
A free high-yield preview for the UKMLA Applied Knowledge Test, covering how to recognise this condition. The full SA Note notes add investigations, management and complications, with practice questions on this topic.
Key high-yield points
- Optic radiation splits after the LGN into two bundles travelling through different lobes - focal lesions disrupt only one bundle, producing a quadrant defect rather than full hemianopia
- Meyer's loop (temporal lobe) - carries lower retinal fibres = upper visual field information; loops anteriorly through temporal lobe to lower calcarine sulcus
- Parietal fibres - carry upper retinal fibres = lower visual field information; travel superior route through parietal lobe to upper calcarine sulcus
- All post-chiasmal lesions → homonymous defects, contralateral to the lesion
PITS mnemonic: Parietal → Inferior quadrantanopia; Temporal → Superior quadrantanopia
Unlock the full Quadrantanopia revision
Get the complete high-yield notes (5 more sections covering investigations, management and complications), practice questions, mock exams and Sal, the AI tutor. Start free.