30 Gaze Palsies
![](https://photos.thisispiggy.com/file/wikiFiles/wf3VnDq.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/QORNgNa.jpg)
- look to right: begin in PPRF signal to CN 6 nucleus, innervate LR
- MLF: CN 6 nerve fiber to contralateral CN III
![](https://photos.thisispiggy.com/file/wikiFiles/GQKSBHo.jpg)
- PPRF next to MLF and CN 6 nucleus
![](https://photos.thisispiggy.com/file/wikiFiles/PRLNIyE.jpg)
INO
![](https://photos.thisispiggy.com/file/wikiFiles/HkZLb0r.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/WijPimM.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/2MuCb5U.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/xghQcQP.jpg)
- left INO: left MLF damaged, can't gaze right
- move left: everything ok
- move right: midline
![](https://photos.thisispiggy.com/file/wikiFiles/Yg2lU35.jpg)
- gaze right
- LR of right eye ok
- MLF damaged: left eye can't adduct
- left INO
![](https://photos.thisispiggy.com/file/wikiFiles/hS0Yeuv.jpg)
- left INO: left eye can't gaze right
- right INO: right eye can't gaze left
![](https://photos.thisispiggy.com/file/wikiFiles/2DI9bQd.jpg)
CN 6 Palsy
![](https://photos.thisispiggy.com/file/wikiFiles/C83Mbf3.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/2DI9bQd.jpg)
PPRF
![](https://photos.thisispiggy.com/file/wikiFiles/8KopwbJ.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/umnUi0m.jpg)
- no PPRF: can't initiate gaze to affected side
- both eyes can't gaze right, opposed to CN 6 (only right eye can't gaze right)
![](https://photos.thisispiggy.com/file/wikiFiles/zTKrKGP.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/KjP7DSW.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/2DI9bQd.jpg)
One and Half
![](https://photos.thisispiggy.com/file/wikiFiles/U2ZmFHV.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/2DI9bQd.jpg)
Frontal Eye Field
![](https://photos.thisispiggy.com/file/wikiFiles/XDIAIkO.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/yRXCQGN.jpg)
- normal gaze: right and left FEF both pushing eyes equally
- lesion: remove activation of one side, other side dominates
![](https://photos.thisispiggy.com/file/wikiFiles/2DI9bQd.jpg)
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