Little House on the Prairie Season 4 Episode 21
Overview
Mary falls in love with Seth. When Mary’s eyesight starts to get worse, Charles takes her to a specialist. He is devastated when the specialist tells him that Mary will lose her sight. Charles is unable to tell Mary for a while that she is going blind. When Mary does go blind, the whole family suffers.
Director: William F. Claxton
Guest Star: Alison Arngrim, Dabbs Greer, Ford Rainey, Hersha Parady, Jonathan Gilbert, Karl Swenson, Kevin Hagen, Merlin Olsen, Patrick Labyorteaux
Episode Title: I'll Be Waving as You Drive Away (1)
Air Date: 1978-03-06