Surprisingly, Daredevil has regained his sight a number of times over the years. The first time was thanks to Moondragon, an obscure member of the Guardians of the Galaxy who miraculously had a gizmo on hand which could temporarily restore his vision (it also robbed him of his radar sense though, and he found himself terrified to leap off buildings). The Beyonder also gave Daredevil back his eyes, as did S.H.I.E.L.D. when they kidnapped and brainwashed him during the '90s to serve as one of their agents. Most recently, the "Superior" Iron Man - a twisted version of Tony Stark - used Extremis to temporarily restore Matt's sight, but none of these stuck much to the relief of the character's fans.
