For example , a person who has a lesion of the right optic tract will no longer see objects on his left side .
The more posterior the cerebral lesion , the more symmetric ( congruous ) the homonymous hemianopsia will be .
A person who has a lesion of the right optic tract will no longer see objects on his left side .
The more posterior the cerebral lesion , the more symmetric ( congruous ) the homonymous hemianopsia will be .