Illusions contact lenses from CIBA Vision are manufactured to alter the color of dark eyes.  They use a natural-looking iris pattern imbedded in the lens to give a sense of depth, giving your eyes a subtle and natural color change.  Illusions are available in the following colors:  Soft Blue, Deep Blue, Soft Green, Deep Green, Soft Amber, Grey and Violet.  These lenses are designed as daily wear lenses to be replaced annually.

   

Lens Material
The lens material, tefilcon, is a hydrophilic polymer of hydroxyethylmethacrylate.  Illusions soft contact lenses are made by incorporating opaque pigment in an iris pattern between two layers of tefilcon polymer. The opaquing pigment consists of carmine, mica, and titanium dioxide. 

Lens Parameters  
Chord Diameter: 13.8 mm
Center Thickness: 0.10mm at -3.00D, 0.17mm at +3.00D
Base Curves: 8.3, 8.6 and 8.9 mm
Powers: +6.00 to -6.00, 0.25D steps
  -6.50 to -10.00, 0.50D steps

 

Lens Properties  
Specific Gravity: 1.18
Refractive Index: 1.43
Water Content: 37.5% by weight in normal saline.

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