NightFlex and NightFlex Relax

Orthokeratology lenses are worn by night to reshape the cornea geometry during a sleep in such a way that during a day sharp vision is ensured without any other vision aid.

  • wearing contact lenses over night – perfect vision all day long
  • save an quick for myops up to –5,00 dpt, cyl –1,50 dpt
  • approx. 60 – 70% decrease of myopia after the first night
  • full correction after 3 – 4 nights, stable all day long after approx. 4 weeks complete reversible and noninvasively
  • simple fitting with experienced design for years
  • to control the increase of myopia
    comfortable way to fit contact lenses with dry eye patient and comfort problems


Orthokeratology when carried out with a responsible approach, regular check-ups and appropriate patient selection, is reliable, effective, reversible, and profitable method of myopia correction.

This, in turn, may result in high patient satisfaction accompanied by long lasting loyalty.

Recent studies have revealed that orthokeratology may slow down the myopia progression. To enhance its effectiveness, SwissLens has made a calculator thanks to which OrthoK design for myopic kids can be now supported with the Relax system.


Back optic zone: spherical with reversed zone and aspherical flattening
Front optic zone: spherical


  • Myopia to -5.00 dpt
  • High Myopia to -9.00 dpt
  • Hyperopie to +3.00 dpt
  • Relax Myopia Management
  • Multifokal


Boston XO green, blue, violette, red

Optimum Infinite green, blue

Fitting guide

  • We need your customer paramters as K-readings, excentricity and prescritption to calculate the conatct lens.
  • No trial lens or trial set is required.
  • The fitting following the same rules on the landing zone as a standard aspherical RGP lens.
  • The use of a topographer (keratograph) to evaluate the fitting and changes on the cornea is mandatory to use the Orthokeratology contact lenses.
  • To use the contact lens we recommend a preservative-free saline.




Technical Data

Total diameter10.00 mm12.00 mm0.01 mm
Base curve7.50 mm10.50 mm0.01 mm
Alignment zone curve7.00 mm8.40 mm0.01 mm
Sphere (CL)-1.00 dpt+2.00 dpt0.01 dpt
Sphere (target)-9.00 dpt+3.50 dpt0.01 dpt
Astigmatism-0.50 dpt-2.50 dpt0.01 dpt
Addition+0.50 dpt+3.00 dpt0.01 dpt

Additional information


, ,


Correction Type

, ,

Lens Type

Designed by


Product Video