Quasar K

From - £42.33

Quasar K uses the same state-of-the-art CNC lathes and multi-aspheric technology as Quasar and applies it to the keratoconic cornea. A truly junctionless, continuous curve is produced in one smooth cut of the computer-controlled lathe, from the lens centre-right to its edge.

Specs

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When to use

  • Available in a choice of lens materials

  • Can be fitted from a trial set

  • Junctionless back surface for improved comfort

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Parameters

Materials:All RGP materials available 
Trial set radii5.70 to 8.00 in 0.10mm steps
Power-25.00 to +20.00 radius and overall diameter dependent
Total axial edge lift0.421mm – 0.196mm, radius and overall diameter dependent
Overall diameter8.80 to 9.60mm radius dependent
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Fitting Guide

Selecting base curve
  • K reading 6.80 to 7.80 average K
  • K reading 5.00 to 6.80 average K
Select diameter
  •  8.80mm diameter as standard
  • Diameters up to 9.60mm are available
Assessing the fit
  •  Allow at least 20-30 minutes for the lens to stabilise
Ideal fit
  •  2–3 mm of central touch, annulus of fluorescein then mid-peripheral touch with 0.5 mm of edge clearance
Flat fit
  •  If there is excessive central touch and / or staining then choose a steeper BOZR
Steep fit
  •  If there is no central touch or central pooling flatten the BOZR
To order
  •  Provide trial lens parameters with spherical over refraction where possible
  • Ensure the trial lens used for over-refraction is the best fitting lens
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