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Intraocular
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 sales@contamac.com
CI18 technical information
Material Characteristics:
| Property | CI18 |
|---|
| Swell Factor | 1.10 at 20°C |
| Water Content | 18% at 20°C |
| Refractive Index @ 20°C | 1.471 hydrated |
| Light Transmission | >95% (400-440nm) |
| UV blocker | Standard |
| Diameter | 12.70 & 16.0mm |
| Thickness | 3.00mm |
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:
| Tooling | Radius (mm) |
|---|
| Rough | 0.30 – 0.50mm |
| Fine | 0.30mm |
Machining Recommendations:
| Lathe type | RPM | Bulk cut | Fine Cut |
|---|
| Manual | 7,000 | 0.5 - 0.7mm | 0.05 - 0.10mm |
| CNC | 7,000 | 0.5 - 0.7mm | 0.05 - 0.10mm |
| Air Bearing | 10,000 | 0.5 - 0.7mm | 0.05mm |
Environment Control
For best manufacturing conditions Contamac recommends 19-23°C with a relative humidity of 45% - 60%
Polishing
Contamac's CI18 materials can be polished using tumble polishing methods.
Hydration
Hydrate the finished IOL in borate buffered pH 7.2 isotonic saline or a similar buffered saline solution.