The HydroMed is a custom made soft post-surgery contact lenses with an unique, fully customisable design. The patented dynamic stabilization retain the same oxygen supply at the limbus comparing a standard prismatic contact lens. This soft post-surgery contact lenses are available as a single vision, but also in a multifocal version.

Depending on the topography, the HydroMed is available with one or two peripheral, fully customisable, curves . The design provides the patients with comfort as a standard soft contact lens and the optic zone can be adjusted to get a visual acuity similar to rigid lenses.



  • Spherical back optic zone with customisable spherical flattening (inverted or not)
  • Front toric optic zone
  • Dynamic stabilisation with bumps nasal and temporal
  • Available with optimized center thickness
  • Marking at 0° and 180°


HydroMed S1S: Spheric center and 1 customisable peripheral zone

HydroCone 34: Spheric center and 2 customisable peripheral zone

HydroMed P:Multifocal-variants of HydroMed with front optic zone in Bifocal (Bf) /  Simple progressive (Sp) /  Multi progressive (Mp)

Technical Data

Total diameter12.00 mm17.00 mm0.01 mm
Base curve7.00 mm12.00 mm0.01 mm
Sphere-40.00 dpt+40.00 dpt0.01 dpt
Cylinder-0.25 dpt-8.00 dpt0.01 dpt
Addition+0.50 dpt+4.00 dpt0.01 dpt
Central optical zone Zoc1.00 mm5.50 mm0.01 mm
Flattening1 or 2 customisable peripheral zones

Additional information




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Correction type

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Lens Type

Designed by


Fitting advices for FlexMed

We suggest working with trial lenses with cyl −0.01 dpt.

Geometry choice

First apply the cornea indication or topography:

  • Post Lasik: 2 curves (S1S), 1 inverted flattening
  • Post keratoplasty: 3 curves (S2S), 2 customisable flattening (inverted or not)
Diameter and base curve: 1st trial lens
  • ØT: corneal diameter + 2.5 mm
  • Ø0: central operated optic diameter measured by topography. Otherwise default value
  • BC: rcfl + 0.30 mm
  • Ø1 (S2S):external diameter of the operated zone
  • r1 (S1S) and r2 (S2S): standard base curve of a soft contact lens (~8.70 mm)
  • r1 (S2S): overlapping zone (Zr), if BC < r2: r1 = r2 + ~0.30 mm / if BC > r2: r1 = r2 − ~0.30 mm
  • The first trial lens helps to validate base curves and diameters. Dynamic stabilisation marks are needed to measure the stabilisation axis.
  • F’v for the trial lens order: spectacle sphere (adjust BVD = 0) with −0.01 dpt × 180° cylinder.
  • For changes and control over several months always use the initial (genesis) lens for over refraction.
  • It’s possible to use virtual fitting assistant to determine the different zones.
  • We recommend using Fluorescein with large molecules to detect and identify problems resulting from the fit.
  • Measure the residual astigmatism by auto refractometer plus subjective refractometry.
  • Due to inverted flattening, a weak mobility of the contact lens is normal.
  • It’s possible to modify centre thickness to adjust cornea irregularities (see HydroCone).
  • HydroMed P fitting: initially fit with HydroMed (single vision toric lens) then add progression in a second step.

Soft Contact Lens Materials

FeaturesDefinitive 74 (SiH)UniSil 62 (SiH)Igel 77CTF 67GM3 58Igel 58GM3 49
DK Fatt ISO 9913-160*/44**50*/37**39*/29**30*/22**25*/19**21*/16**16*/12**
Material typeSilicone HydrogelSilicone HydrogelHydrogelHydrogelHydrogelHydrogelHydrogel
ClassificationFilcon V3Filcon V3Filcon II3Filcon II2Filcon II1Filcon II1Filcon II1
Water content74%62%77%67%58%58%49%
Refractive index1.371.511.371.391.411.401.42
Handling tintclear / blueblueclearclearclear / blueclearclear / blue
UV√ (blau)
Normal tear film++++++++++++++++++
Reduced tear film++++++++++++++
Watery tear film++++++++++++++++++
Tear film with lipid+++++++++++++
Tear film with protein+++++++++++++
Initial comfort++++++++++++++++
Low dehydration++++++++++++++++
Dry eye+++++++++++++++++

* ×10-11 (cm2/sec) [ml 02/(ml × mm Hg)]

** ×10-11 (cm2/sec) [ml 02/(ml × hPa)]

Default material: GM3 58% white

Quality assurance

These materials are in conformity with the standard ISO 10993-1 defining the biocompatibility of materials.

SwissLens manufacturing process warrants this biocompatibility even after the manufacturing process, in particular without adding polish material. This standard is required by the quality assurance system of SwissLens