In view of subsequent events it would be difficult to find a more interesting subject of inquiry than the internal religious and sociological conditions in Samaria at this age.
Its incidence following spine surgeries exceeds that after cardiothoracic surgeries. Various causes attributed to postoperative blindness include ischemic optic neuropathy, central or branch retinal artery occlusion, cortical blindness, and rarely external ocular injury.
Not easy answer: The memory issues after anesthesia and surgery have been the focus of many studies. It is unclear if anesthesia by itself or if surgery and anesthesia or if surgery by itself is what causes postoperative cognitive dusfunction.