Valley Kone

Lenses>Specialty GP>Keratoconus>Valley Kone

Design

• Keratoconus

• Manufactured in any material.

• Back Aspheric

Candidates

• Patients who have diagnosed with keratoconus.

Lens Parameters

• Any base Curve radius

• Diameters

8.5mm to 9.5mm

• Edge Lift

Valley Kone A: Steeper than standard edge lift

Valley Kone B: Standard edge lift

Valley Kone C: Flatter than standard edge lift

Fitting

• Average diameter is 9.0mm

• Use trial lenses in a diagnostic set.

• Use the trial lens equal to the median K reading.

• If corneal topography data is available, select the base curve .ro steeper than the radius located at the 4mm temporal position on the radius version of the topography mappings.

• If corneal data is not available, select the 50.00D (6.75 mm) base curve lens from the trial set to begin the evaluation process.

• Standard periphery can be ordered steeper or flatter if necessary.