What is cortical blindness

Acquired cortical blindness is most often caused by loss of blood flow to the occipital cortex from either unilateral or bilateral posterior cerebral artery blockage (ischemic stroke).The term cortical visual impairment was coined to differentiate from a condition called cortical blindness, first described in soldiers during world war i.The exception would be those cases in which the cause was a dysfunction of the occipital cortex generated by some treatable cause, such as an infection, as long as the brain tissue has not died.There is an impairment of visual functioning even though the eyes are anatomically and structurally intact.Polioencephalomalacia in calves and adult cattle, lead.Blindness due to loss or injury to the visual cortex, that section of the cerebral cortex responsible for vision, as through a stroke or traumatic brain damage.

Usually, children with cortical blindness have normal eye exams but still have vision difficulties, caused by a problem in the part.A child with cvi has a normal eye exam that cannot account for the abnormal visual behavior.This condition affected adults who suffered bullet injuries to the back of their brain.Due to that specific trauma to the early visual processing parts of the brain, they became blind even.If the visual cortex is damaged and.17 it has a very high association with pediatric surgical procedures in national databases, 2 but it is unclear if this association is related to the high rates.

The incidence of cortically induced blindness (cb) is increasing as our population ages.