This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: ENT
Tobey-Ayer test is done for: 
Select and explain. 
A. Acantholysis, B. Hemoglobinuria, C. Ketosis, D. Lateral sinus thrombosis
D: Lateral sinus thrombosis
Answer: D: Lateral sinus thrombosis 
Explanation: Tobey - Ayer test This is to record CSF pressure by manometer and to see the effect of manual compression of one or both jugular vein. Compression of vein on the thrombosed side produces no effect while compression of vein on normal side produces rapid rise in CSF pressure which will be equal to bilateral compression of jugular veins It is done for lateral sinus thrombosis