4F Design

A high quality RGP lens for daily wear.

This popular four curve RGP lens is available in a selection of materials, with a power range of -30.00D to +30.00D

Parameters​

Standard Material is F2 Mid, but other materials can be ordered.

Material:   (F2 Low) Focon III 2

Refractive Index:   1.460

Permeability (Dk):   28 x 10

Wetting Angle:   19°    

Tints: Blue, Grey, Green, Clear

Material:   (F2 Mid) Focon III 3

Refractive Index:   1.450

Permeability (Dk):   50 x 10

Wetting Angle:   19°    

Tints: Blue, Grey, Green, Clear

-11

-11

Fitting Sets

There are 2 fittings set available*

12 lens set

   Material          Base Curve Range        Diameter              Power

  RGP Only             7.35 to 8.17                  9.40                    -3.00

* A registered account with Cantor & Nissel is required.

Check out our RGP Extras 

Material:   (F2 High) Focon III 4

Refractive Index:   1.440

Permeability (Dk):   100 x 10-11

Wetting Angle:   21°    

Tints:    Blue, Green, Clear, Grey

Base Curve (mm):   7.05, 7.12, 7.20, 7.27, 7.35, 7.42, 7.50, 7.57,

7.65, 7.72, 7.80, 7.87, 7.95, 8.02, 8.10, 8.17, 8.25, 8.32, 8.40, 8.47

Diameter (mm):  8.60, 9.00, 9.40 9.80, 10.20, 10.60

Power Range:  -30.00 to +30.00D (0.25 steps)

© 2019 by Cantor & Nissel Limited

Cantor + Nissel Ltd | Market Place |  Brackley  | Northamptonshire | NN13 7NN | United Kingdom