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.
There are many things which cause blindness. Sometimes babies are born blind, but most blind people become blind later on. Glaucoma, cataracts, and diabetic retinopathy are the three most common causes of blindness today. Many older persons lose their vision from macular degeneration.