IOL - C126 - Contaflex CI 18

Nature: Copolymer of hydroxyethyl methacrylate and methyl methacrylate

The CI18 is a variation of the well known and established CI26. The specific material properties required for less conventional lens designs can be achieved through the mechanical and optical properties of these products.

For further information on Contaflex CI 18 please email

CI18 technical information

Material Characteristics:

Swell Factor1.10 at 20°C
Water Content18% at 20°C
Refractive Index @ 20°C1.471 hydrated
Light Transmission>95% (400-440nm)
UV blockerStandard
Diameter12.70 & 16.0mm

Please note: These are typical values. Always check the certificate of compliance supplied with the goods for the actual values of the batch.

Diamond Tooling:

ToolingRadius (mm)
Rough0.30 – 0.50mm

Machining Recommendations:

Lathe typeRPMBulk cutFine Cut
Manual7,0000.5 - 0.7mm0.05 - 0.10mm
CNC7,0000.5 - 0.7mm0.05 - 0.10mm
Air Bearing10,0000.5 - 0.7mm0.05mm

Environment Control

For best manufacturing conditions Contamac recommends 19-23°C with a relative humidity of 45% - 60%


Contamac's CI18 materials can be polished using tumble polishing methods.


Hydrate the finished IOL in borate buffered pH 7.2 isotonic saline or a similar buffered saline solution.

Copyright © 2017 Contamac. All Rights Reserved. GLOSSARYEnquiries to:
Copyright © 2017 Contamac. All Rights Reserved. GLOSSARYEnquiries to: