• Keratoconus is a fairly uncommon condition that affects the cornea (the transparent window at the front of the eye).
  • Keratoconus causes changes within the structure of the cornea making it weaken and thin resulting in a 'cone shaped' forward bulge.
  • Keratoconus leads to myopia (short sight) and, if the steepening is uneven, also astigmatism (distortion of vision).
  • With Keratoconus, visual distortion can become difficult to correct with spectacles, although contact lenses (usually rigid) can provide more functional visual performance.