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.
The secondary complications of this disease can be significant. The heart can develop thyrotoxic cardiomyopathy, and it can literally wear out from pumping so hard and fast. Hypertension (high blood pressure) can cause hemorrhage in the eye and retinal detachment, leading to sudden onset blindness.