A man lost eyesight in one eye because an eye doctor failed to recognize that the optic nerve was cut during surgery.
A man was mugged and suffered broken bones in his face. The muscle that controlled movement of his eye from side to side got trapped in a broken bone and needed to be removed. The doctor who did the surgery claimed to be proficient in this surgery and chose to do the procedure rather than let a more experienced surgeon do it. After the surgery, the patient had no vision. Even after immediate corrective surgery, the nerve that controlled eyesight was totally destroyed, leaving the patient with permanent blindness in one eye.