This is "the disability" episode, and it is rather good. I have attended lectures done by deaf-mute professors that are verbalized by interpreters. Such people are vital for understanding, for both the mute person and for people who do not understand ASL or other sign language, similarly to Riva's Chorus. The b-plot is about La Forge being able to possibly have eyes, literal eyes. Ultimately both decide to accept themselves for who they are and Riva uses his own victimization to advance peace.