Keratoconus occurs when the middle of the cornea thins and gradually bulges outward, forming a rounded cone shape. The abnormal curvature changes the cornea’s refractive power producing moderate to severe irregular astigmatism and blurriness of vision. As the condition advances, scarring of the central cornea occurs.

In early stages of keratoconus eyeglasses may correct their vision. However, as this condition advances, gas-permeable rigid contact lenses maybe the only way to achieve clear vision. Contact lens fitting of a patient with keratoconus requires much care and frequent check-ups, because the condition can worsen.

In most cases, the cornea will stabilize after a few years without ever causing severe vision problems. Only a small percentage of patients with keratoconus may become intolerant to contact lenses, or find that scarring of the cornea has caused loss of vision. In this situation, a corneal transplant is an option that can result in improved vision. A corneal transplant is highly successful but requires a long healing period.  After three years 90%-95% people with advanced keratoconus have success with corneal transplant.

Recently it has been found that Intacs, which are normally used for refractive purposes, have caused stabilization in keratoconus patients.

Related subjects are regression and ectasia.

If you have keratoconus that is problematic and would like further evaluation and possible resolution treatment from a Second Response Team doctor who is experienced in treating keratoconus, please feel free to request a doctor referral.