This old tale is not true. When worn, the RGP lenses temporarily flatten the Non-structural epithelium (skin) of the cornea. To say that RGP contact lenses somehow stop keratoconus from progressing is like saying that wearing a baseball hat stops a child's skull from growing because keratoconus is a progressive disease, there must be some medical intervention to stop it, such as corneal crosslinking (C3R)