He-Man and the Masters of the Universe (1983)

S2E38 Not So Blind

He-Man encounters a blind boy named Lous, whose friends view him as incapable due to his blindness. In an effort to show Lous his true potential, He-Man invites him to join an adventure with himself and Ram Man to the Singing Crystal caves. As they explore the caves, a sudden burst of light renders both He-Man and Ram Man blind. Now relying solely on their senses, Lous bravely takes the lead, guiding them through numerous perilous challenges to find their way back to safety.