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The Benefits of the I-Kone™ manufactured exclusively by Valley Contax in Boston® XO
By Dr. Rob Breece, Inventor of the I-Kone
Keratoconus Lens
Achieving an acceptable fit on the keratoconic cornea is challenging, especially in the more advanced cases. When repeated attempts with different keratoconic lens designs fail, lens intolerance, poor vision and even corneal scarring can result. Then corneal transplant may be the patient's only feasible option.
I saw a need for a keratoconic contact lens that performed better than the current offerings. Better comfort, better vision and better corneal response were the goals. This means the lens simply has to fit better than the conventional keratoconic designs. I applied my experience in contact lens fitting and my training in biomedical engineering to analyze the problem and the possible solutions. With the manufacturing technology available today, lens designs are not constrained to spherical curves.
The term kerato-conus means the cornea becomes shaped like a cone, so it is natural to shape the lens like a conic sections to achieve a better fit. This is not a new idea, but previous aspheric lenses were not successful because they had only the back surface conic and when they inevitably decentered, even slightly, unwanted aberrations were induced and visual acuity was reduced.
The back surface of the I-Kone™ lens is designed to conform to the shape of the conic cornea. Pressure points are reduced because the bearing forces are distributed over a larger area, resulting in better comfort and centration. Also, we can make larger optical areas which improves vision.
The aspheric front surface is computed to reduce the spherical aberration and eliminates the aberrations induced when the visual axis does not exactly coincide with the geometric axis of the lens.
The individual lens design is only a part of a successful approach to managing keratoconus cases. There must be included a simple, logical system for fitting and trouble-shooting to be straightforward. Keratoconus comes in a variety of presentations and we need flexibility in the lens design to maximize the success rate. The I-Kone™ trial lens set is designed for maximum efficiency while allowing the practitioner the freedom to modify the standardized design, when needed. Another part of the I-Kone system is the expert consultation available to help you.
Finally, the lens material must be chosen that excludes the possibility that hypoxia, or surface wetting, will be problems. Polymer Technology's Boston®XO exceeds these requirements and compliments the excellent performance of the I-Kone™ lens.
Find out today about a great deal on an I-Kone™ trial lens set!
