Keratoconus

Keratoconus is a progressive eye disease in which the normally round cornea thins and begins to bulge into a cone-like shape. Keratoconus can occur in one or both eyes and often begins during a person's teens or early 20s.

The earliest signs of keratoconus are usually blurred vision and frequent changes in eye glass prescription, or vision that cannot be corrected with glasses. The diagnosis is confirmed by corneal topography. 
 
You may already know you have Keratoconus.
 
What are your options offered at The Eyeclinic when glasses are no longer good enough?
 

Contact Lenses

There are various contact lenses available for people with keratoconus.

In the earlier stages of keratoconus, soft contact lenses are used to provide clear vision.

As the keratoconus progresses and soft contact lenses are not sufficient, Rigid Gas Permeable (RGP) contact lenses become the main option for correcting the vision. These lenses mask the irregularities of the cornea, with tears between the lens and the cornea.

Hybrid lens is when an RGP center is surrounded by a soft peripheral “skirt”. The center RGP portion provides clear vision while the soft lens skirt provides the comfort of wearing the lenses.

Scleral lenses are larger diameter lenses that rest on the white part of the eye and vaults over the cornea. By being larger, the lenses do not fall out easily or have dust stuck in them. The lenses also trap a tear reservoir between the lens and the eye hence dry eye is not a problem. With the larger diameter, the lenses are also surprisingly very comfortable as there is less interaction between the lids and the lens.

Implantable Contact Lens (ICLTM)

Visian ICL™ is a lens placed within the eye and is made of Collamer, which is similar to collagen. It is biocompatible and is never rejected by the body because collagen is found in our bodies naturally. Rather than altering the shape of the cornea by thinning the corneal tissue as in LASIK, the Visian ICL™ is easily inserted into your eye behind the iris through a tiny self-healing wound of 2.5 mm. The cornea where light enters the eye is kept pristine. Visian ICL™ is made of a soft foldable material called Collamer, which is similar to collagen. Hence the lenses are bio-compatible.

 
One such successful case was the Visian ICL™ implanted in Steven Holcomb, a bob sled pilot from team USA. Due to keratoconus, Holcomb’s vision was once as bad as 20/1000. His vision improved to almost 20/20 after surgery, allowing him to see things on tracks that he never knew were there before.
 
For more information on ICL™ and Keratoconus, click here.