Radial keratotomy: An eye surgery procedure designed to flatten the cornea, reducing its optical power, to correct nearsightedness (myopia). In the procedure, incisions (cuts) are made in the cornea. The procedure is said to be radial because the incisions resemble the spokes in a bicycle wheel.
Slinky Dog (better known as Slinky and often called Slink or Slinkykins) is a supporting character in the Toy Story franchise. He is a toy dachshund with a graveled Southern accent.
1 This makes Slinky the only character who had to be recast for Toy Story 3.  Also in the third film, Slinky's voice is a bit low pitch. In the previous films, his voice was a bit higher; this can be explained by the fact that Slinky isn't voiced by the same actor.