OrbiFlex

The OrbiFlex spherical RGP lenses are available in 2 different back surface geometries as Aspherical and Multicurve. This promise an optimal fit and increase the customer comfort.

Description

Geometry

OrbiFlex ASP

  • Aspheric Design
  • Spherical center
  • 1 aspheric flattening
  • Eccentricity: 0.10 -> 0.90
  • Corneal toricity < 3/10 mm

OrbiFlex SMS

  • Multicurve Design
  • Spherical center
  • 3 spherical flattenings adjustable comparing to cornea eccentricity
  • Eccentricity: 0.10 -> 0.90
  • Corneal toricity < 5/10 mm

Other variants:

  • OrbiFlex SA: Spherical with small Aspherical flattening
  • OrbiFlex S2A: Spherical with Bi-Aspherical flattening
  • OrbiFlex S3S: Multicurve with 3 fixed spherical flattening

Technical Data

Parameterfromtosteps
Total diameter10.00 mm12.00 mm0.01 mm
Base curve6.00 mm9.00 mm0.01 mm
Sphere-40.00 dpt+40.00 dpt0.01 dpt
Eccentricity0.100.900.01

Additional information

Application

Indication

Correction type

,

Lens Type

Designed by

SwissLens

Fitting advices

  • Total diameter: = corneal diameter – 2.00 mm
  • Base curve:
    • ASP: r0 = Kflat (rcfl)
    • SMS:
      • ( rcfl – rcst) ≤ 0.30 mm -> BC = rcfl – 0.05
      • (rcfl – rcst) ≤ 0.40 mm -> rO = rcfl – 0.10
      • (rcfl – rcst) ≤ 0.50 mm -> rO = rcfl – 0.15
  • Flattening: ASP & SMS: eccentricity (En) = eccentricity of the cornea at 30° rounded up to the next 1/10

Fitting advices for gas permeable contact lenses

Geometry

  • Insert trial lens for a minimum duration of 30 minutes. Ask patient to focus on the floor to minimise the foreign body sensation.
  • Evaluation of the subjective comfort.
  • Over-refraction
  • Slit lamp examination:
    • Dynamic evaluation with diffuse illumination:
      • Eye in primary gaze and blinking normally.
      • Movement (speed) and position after blink and during eye movements:
        • Vertical movement
        • Horizontal movement
        • Centration
        • A good fitting lens will be evenly centered on the cornea (±0.5 mm)
        • The movement should be pronounced but not too big (1-2 mm)
  • Static evaluation with fluoroscopy:
    • Evaluation when patient is looking straight ahead and the lens is centered on the cornea without impact of the eyelids on the lens: Evaluation of the tear film thickness under the lens; tear film < 10μm = no florescein is visible.
      • central optic zone with alignement fluorescein pattern
      • inter-peripheral zone with small amount of fluorescein
      • peripheral zone with a band of increased fluorescein which will be needed for a good tear film exchange
Advice for Toriflex

The optimal fluorescein pattern shows a small fluor lake in the center and a larger fluor ring in the periphery (env. 0.75 mm).
Vertical movement should be around 1 mm. In case of too much movement, decrease both central back curves (r0fl and r0st) with -0.10 mm. In case of low riders, increase both central back curves (r0fl and r0st) with +0.10 mm or in case the upper lid is pushing the lens down, increase the total diameter ØT.

In case of high riders, decrease total diameter ØT

For Toriflex TP only:

In case of instable stabilisation and/or high riders, increase the prism to 2.0 cm/m.

WARNING: the stabilisation prism induce an optical prism. This should be adjusted on both eyes.

Rigid Contact Lens Materials

FeaturesOptimum InfiniteBoston XOOptimum ComfortBoston EOContaperm F2Optimum ClassicBoston ES
DK Fatt ISO 9913-1

200.4*/180**

100*/75**

65*/49**

58*/44**

28*/21**

26*/19.5**

18*/15**

ManufacturerContamacPolymertechnologyContamacPolymertechnologyContamacContamacPolymertechnology
Wettability angle8° (3)49° (2)6° (3)49° (2)19° (3)12° (3)52° (2)
Hardness (4)80.779.97983838385.4
Refractive index1.4381.4151.4371.4291.461.451.443
Handling tintclear blue greenblue red green lilablue greenblueclearblue greenblue green
UV
Durability+++++++++++++++++++
Resistance deformation (5)+++++++++++++++++
Long term wearing+++++++++++++
Tear film with lipid+++++++++++++
Tear film with protein++++++++++++++
Wettability+++++++++++++++++

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

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

2 Wettability angle = CLMA method 

3 Receding contact angle (DCA)

4 Shore D 

5 Corneal astigmatism

More information about the product features (Article by Boston Materials)

Default material: Optimum Classic Blue

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.

Boston Materials

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