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.
Transient ptosis, or ptosis that improves over the postoperative period, can be caused by eyelid edema, hematoma formation (both intraorbital and eyelid), foreign body reaction, ocular inflammation and anesthesia effects. Postop edema is probably the most common cause of transient ptosis.