to look (stare) back at (someone)
to look at again; to re-examine
to prove oneself superior (to someone who had previously been condescending); to put a person to shame; to get one's own back
to look back (behind oneself)
彼女は振り向いて相手を見返した。
She turned around and stared back at the other person.
資料を見返して誤りに気づいた。
I looked back over the documents and noticed an error.
卒業アルバムの写真を見返したら懐かしくなった。
When I looked back at the graduation album photos, I felt nostalgic.