Thames Design

A high quality soft contact lens for daily wear

 

A tinted contact lens used to reduce light transmissibility to the eye.

Features

  • Spherical blended bi-curve front surface
  • Spherical blended bi-curve back surface
  • Lathe cut

Benefits

  • Large Parameter range
  • A graduated aspheric lenticular zone ensures minimum thickness in any power
  • Every prescription optimised for handling characteristics and oxygen transmissibility
  • Computer controlled lathes ensuring excellent reproducibility

 

Material Filcon II 2
Water Content 67%
Permeability (Dk) 30 x 10 -11
Base Curve (mm) 6.60 to 10.40
(0.20 steps)
Diameter (mm) 11.00 to 17.50
(0.50 steps)


Not all base curves are available in diameters above 15.00mm.  Please refer to out Material Data sheet for available material parameters.
   
Power Range -30.00 to +30.00D
(0.25 steps)
Higher powers may be avaiable 
Centre Thickness (mm) 14.50mm -3.00 = 0.12
   
Recommended care ystem is Quattro multipurpose solution by Abatron, hydrogen peroxide systems may be used.  Other multipurpose solutions may cause tint to fade.

 

  • Full refraction and eye examination
  • Keratometry
  • Select diameter required 2-3mm larger than HVID
  • Select Base Curve according to corneal curvature, but with a flattening differential relative to the diameter of the lens shown below:  
Lens Diameter Order Base Curve Flatter Than Flattest K By:
12.50mm 0.30mm - 0.40mm
13.00mm 0.40mm - 0.60mm
13.50mm 0.60mm - 0.80mm
14.00mm 0.80mm - 1.00mm
14.50mm & 15.00mm 1.00mm - 1.20mm
15.50mm and above 1.40mm - 1.60mm

Good Fit

  • Comfortable
  • Good centration with full coverage of limbus, even in upward gaze
  • Adequate smooth movement in all directions of gaze
  • Good recovery on push-up test
  • Carry out over-refraction and order exchange lens if required

Flat Fit

  • May give poor centration
  • May give unstable vision
  • Can cause discomfort
  • Try steeper base curve (If available)
  • Over-refraction

Steep Fit

  • Displays inadequate or no movement
  • Resists push up test with lower lid
  • Can cause blanching
  • Try flatter base curve (If available)
  • Over-refraction

There is no Thames fitting or trial set available.

Optician looking to order? Call us on +44 (0)1280 702002

Register with Cantor and Nissel for our online ordering facility and be able to order the following lenses via our website: Cantor Prosthetic, Hydrocyl, Hydrofit, Hydrolens and Nissel Custom Hand Painted. The online forms with their drop down menus allow you to order lenses without the need to refer to any size or colour charts.