A 35-year-old male was in a motor vehicle accident and had a traumatic injury to the posterior head. When he awoke from unconsciousness, he could not see. Examination of his eyes was unremarkable. Further evaluation with an MRI scan of the brain was ordered. What area of the brain do you think was injured to cause this cortical blindness? Use 20.22 Functional Regions of the Cerebral Cortex to help you. Which cranial nerve is responsible for vision? Use 21. Cranial Nerves section to help you.