To see feedback from a specific student there a two options.
Once inside the assignment, click on the Results tab in the top menu.
There are 2 options, to view a submission and it's feedback (submission tab) or see all the feedback that 1 student gave (reviewers tab).
On the left side you will see a list of all the students. Scroll down and click on the student that you would like to view. This will display their feedback on the right side of the split screen.