What is Keratoconus?
Keratoconus occurs when the structure of the cornea is just not strong enough to hold the round shape of the cornea which is the clear, central part of the front surface of the eye. The normal pressure inside the eye makes the cornea bulge outward like a cone, and this condition is called keratoconus.
Keratoconus usually begins in the teenage years, but it can also start in childhood or up to about age 30. The changes in the shape of the cornea occur slowly, usually over several years.
Someone with keratoconus will notice that vision slowly becomes distorted. The change can stop at any time, or it can continue for several years.