Toris

The Toris is an individual soft contact lens for all toric refractive errors. Its wide range of parameters and materials allows an optimal adaptation to the eye and therefore highest wearing comfort and long wearing times.

Description

Geometry

Toris Ext

  • Back spherical optic zone with aspheric flattening
  • Front toric optic zone
  • Dynamic stabilisation with bumps nasal and temporal
  • Low corneal astigmatism, internal or combined astigmatism
  • Marking at 0° and 180°
  • 2 concentric Optical zones far/near
  • CD or CN

Toris Int

  • Back toric optic zone with aspheric flattening
  • Front spherical optic zone
  • Dynamic stabilisation with bumps nasal and temporal
  • Corneal astigmatism > 2.5 dpt improves stabilisation
  • Curve difference over 0.50 mm
  • Refraction axis = axis (rcfl) +/−10°
  • Marking at 0° and 180°

Toris Bal

  • Back toric optic zone with aspheric flattening
  • Front spherical optic zone
  • Ballast stabilisation
  • Deep lower or upper eyelid
  • Unsuccessful fitting with dynamic stabilisation
  • Very large eyelid (> 11)
  • Marking at 0° and 180°

Technical Data

Parameterfromtosteps
Total diameter12.00 mm15.00... 19.00 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
Axe180°
Flattening(-) flowing(+) pronounced (-–) monocurve

Additional information

Application

Indication

Correction type

, ,

Lens Type

Designed by

SwissLens

Fitting advice and guide for soft contact lenses

Diameter and Base curve choice for the first contact lens

  1. Measurement of the corneal diameter (HVID + 0.6 mm)* and K-readings
  2. Determine the contact lens diameter ØT (use table below)
  3. Determine the Base curve r0 = rcfl + BCf (use table below, rcfl = flattest central K)

Orbis (ØCornea + 2.10 mm / BCf = 0.60 mm)

Toris Bal – Torelis Bal – Borelis (ØCornea + 2.30 mm / BCf = 0.70 mm)

Toris Int/Ext – Torelis Int/Ext (ØCornea + 2.50 mm / BCf = 0.80 mm)

Example: Parameter for Toris Ballast:

Cornea parameters: ØCornea = 11.70 mm / Kreading = 7.80 / 7.70 mm

  • ØT = 11.70 mm + 2.30 mm = 14.00 mm
  • r0 = 7.80 mm + 0.70 mm = 8.50 mm

for 0.40 mm delta K, reduce 0.10 mm on r0

Definitive 74: 0.10 mm steeper

* Information: 80% of the corneal curves are statistically between 11,3 and 12,1 mm.

Progress of the adaptation

  1. Insert trial lens for a duration of between 30 minutes and 2 hours. Over refraction (you can use the autorefractometer for getting an idea of cyl/axis).
  2. Biomicroscopy (× 10 to 15) white light: observe the lens with patient looking straight ahead and during eye movement.
  3. Mobility by eyelid movement (Push up test).
  4. Sag of the lens should be from 1 to 2 mm downwards.
  5. Appearance of the front optic zone: tear film, hydration, lubrication, deposit.
  6. Keratometry on the contact lens: (deformation of the mires).
  7. Check for corneal and conjunctival staining with fluorescein after lens removal.
  8. Order the definitive lens on the basis of the SN.

Stabilisation modification

Bump length LB::
  • LB+: large eyelid opening
  • LB-: smaller eyelid opening
  • LB–: droopy upper eyelid
Toris LB
Bump height HB:
  • HB–: strong eyelid tension
  • HB-: high eyelid tension
  • HB+: low eyelid tension

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
ManufacturerContamacContamacContamacContamacContamacContamacContamac
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+++++++++++++
Durability++++++++++++++
Initial comfort++++++++++++++++
Low dehydration++++++++++++++++
Moistening+++++++++++++++++
Dry eye+++++++++++++++++
Non-ionic

* ×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

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