Darkwing Duck - Season 1 Episode 8 -

Darkwing falls afoul of Megavolt and comes out blind. Undaunted, DW tries to keep going using a few inventive gadgets, but Gosalyn, Honker and Lauchpad almost get killed because of him. Sunk in a black funk, Gosalyn and the gang plan to nab Megavolt themselves, but get caught by Megavolt instead.