Reflex Kera

Reflex Kera

From - £68.58

Reflex Kera is designed specifically for irregular astigmatism. The lens design has a number of features which allow it to combine the best of soft lens materials with visual rehabilitation that patients with irregular astigmatism need.


Category: Tag:

When to use

For patients who suffer with:

  • Keratoconus
  • Pellucid marginal degeneration
  • Post refractive surgery
  • Post penetrating keratoplasty


 MaterialDefinitive 74
Base Curve7.00 to 8.20 in 0.30 steps
Powers+10.00 to -20.00
CylinderUp to -7.00D in 0.25D steps



Fitting Guide

Fitting set

Reflex Kera is fitted from a 5 lens fitting set. The fitting set has base curves of:

7.00, 7.30, 7.60, 7.90 and 8.20mm

Select Diagnostic Lens

The initial diagnostic lens base curve should be selected as below rather than using keratometry readings –

  • For prolate /keratoconus corneas:  Select 7.60
  • For oblate /post-surgical corneas:  Select 7.90 BC
Assess Diagnostic Fit

Wait 10 minutes – This allows the lens to settle and equilibrate.

If diagnostic lens –

  • Exhibits excessive movement ( >1mm on blink) or fluting of the edge: Select next steeper base curve
  • Exhibits little or no movement or trapped bubbles after 10 minutes of settling: Select next flatter base curve
Determine Power
  • Lens must have settled for a total of 30 minutes before over-refracting: The tear lens needs to form fully before an accurate power can be calculated
  • The aim of over-refraction is to obtain good functional vision
Evaluate Visual Acuity:

Always begin with a spherical over-refraction:

  • If acceptable vision is obtained, vertex correct the over-refraction as necessary and order lens
  • Only perform a sphero cylindrical over-refraction if good functional vision cannot be obtained

Patients are more likely to be happy with consistent 6/9 or 6/12 vision than with a highly variable and intermittent 6/6:

  • If a sphero cylindrical over-refraction produces a consistent improvement of a line or ideally more of vision a toric lens should be ordered
  • The two fenestrations in the Reflex Kera toric will be placed at the 3 and 9 o’clock positions. There is also a dot at the 6 o’clock position