She is best known for playing Helen Crump on The Andy Griffith Show (1963–1968), Judge Cynthia Justin on Matlock (1991–1992), and Jane in The Blob (1958).

In 1965, she was also cast as Kathy McLennan, the young widow of a rancher, in the episode "Paid in Full" on the syndicated Western anthology series Death Valley Days.

[6] Corsaut later had a continuing role as policeman Bumper Morgan's pawn-shop-owner friend on the 1975–1976 series The Blue Knight.

She had a supporting role as Head Nurse Bradley in the 1980s sitcom House Calls, and she appeared in several episodes of Matlock with star Andy Griffith.

[7] In addition, Corsaut played the role of nurse Jesse Brewer in 1977 on the long-running ABC soap opera General Hospital when long-time portrayer Emily McLaughlin was too ill to work.