Keratoconus usually starts after puberty or in the early teenage years. Both eyes are usually affected but not to the same extent. The active period of keratoconus lasts for around 5 years. Minor changes to the corneal shape (topography) may take place after this active period.
This is normal. Minor changes to the corneal topography may take place in corneas not affected by keratoconus. Minor changes to the “stable” keratoconic cornea may also take place regardless if Collagen Cross-linking is done or if intra-corneal rings (Intacs) are surgically implanted into the cornea.










