Most focusing problems are due to the shape of the eye. If the cornea is too steep or too flat in curvature, this can create short-sightedness or long-sightedness and other distortions in vision.
What we do with laser vision correction, is use a special laser to smooth off and reshape the surface of the eye to correct those focusing problems.
Keratoconus affects about one in 2,000 people, to varying degrees, and usually shows up between the ages of 10 and 25. It causes a progressive thinning and weakening of the cornea - the clear front ‘window’ of the eye - leading to blurred or distorted vision.
The causes of keratoconus remain a mystery, although it’s thought to be hereditary. So as with most things in life, you can blame your parents. Fortunately, the treatments for keratoconus are far from mysterious, and can often be as simple as glasses or contact lenses.
For some people with keratoconus, a revolutionary treatment called corneal collagen cross-linking can be hugely effective in stopping keratoconus in its tracks. Other options for more advanced cases of keratoconus include implantable collamer lenses, corneal rings and corneal transplantation.