The interventional radiologist declined to perform endovascular coiling so that surgical clipping was the only available treatment.
While these scan unequivocally confirm the presence of  aneurysm  they obviously do no elucidate the spatial relations betweeen the aneurysm and the optical nerve.   One cannot even decide whether to approach the aneurysm from the left or  right.  Three dimensional imaging must be used to make such a decision. We wrote a VR simulator to facilitate such analysis.