This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuro Ophthalmology, Subject name: Ophthalmology
Which visual field defects are seen in tip of Lateral geniculate body lesion? 
Select and explain. 
A. Pie in the sky, B. Pie in the floor, C. Keyhole visual field defect, D. Homonyms hemianopia
C: Keyhole visual field defect
Answer: C: Keyhole visual field defect 
Explanation: Tip of LGB lesions: Key hole visual field defect Temporal lobe lesion - Contralateral homonymous superior quadrantanopia (Pie in the sky) Parietal Lobe lesion-Contralateral homonymous inferior quadrantanopia (Pie in the floor). Left superior homonymous quadrantanopia Left inferior homonymous quadrantanopia Keyhole defects in visual fields : Lateral geniculate lesion. Homonymous hemianopia is seen in complete LGB lesions