Name: BoriFlex | SwissLens
SKU: BoriFlex
Availability: InStock

Description

Geometry

BoriFlex ASP

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

BoriFlex 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:

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

Multifocal Variations

Bifocal (Bf)

2 concentric Optical zones far/near
CD or CN

Simple progressive (Sp)

3 concentric Optical zones far/ intermediate / near
CD or CN

Multi progressive (Mp)

multiple spherical concentric zones: distant / near
CN

Technical Data

Parameter	from	to	steps
Total diameter	10.00 mm	12.00 mm	0.01 mm
Base curve	6.00 mm	9.00 mm	0.01 mm
Sphere	-40.00 dpt	+40.00 dpt	0.01 dpt
Addition	+0.50 dpt	+4.00 dpt	0.01 dpt
Central optic Zone (Zoc)	1.00 mm	5.00 mm	0.01 mm
Eccentricity	0.10	0.90	0.01

Additional information

Application	Presbyopia
Indication	Regular cornea
Correction type	Myopia, Hyperopia
Lens Type	Rigid
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.

First contact lens choice

Progression system and central optic zone (Zoc)

Reading zone choice

Determine if the vision is alternate (change of optic zones by translation) or simultaneous (change of optic zones by visual cortex selection):

Alternate vision: reading zone in periphery (most of the cases)
Simultaneous vision: reading zone in centre

Requirements	Bifocal Bf	Simple progressive Sp
Myopia Addition < 1.75 dpt	√
Myopia: Addition ≥ 1.75 dpt		√
Priority in distance vision	√
Priority in near vision	dominant eye	non dominant eye
Good contrast	√

Distance vision depends on centering, near vision on the movement (translation).
For a good translation, a movement from 1 to 2 mm is needed. It is affected by rO and ØT.
The fluoroscopy must show good optic zone alignment.

Central optic zone, position and diameter:

Recommendations for the 1^st choice: standard pupil (3.50–4.00 mm) with normal lighting

	Bifocal Bf	Bifocal Bf	Simple progressive Sp	Simple progressive Sp
Position	Centre near (CN)	Centre Distance (CD)	Centre near (CN)	Centre Distance (CD)
Dominant eye	2.25	3.75	2.50	4.00
Non-dominant eye	2.75	3.25	3.00	3.50
Undefined	2.50	3.50	2.75	3.75

For non standard pupil size or for distance/near preference, fit the Zoc in steps of 0.25 mm

Rigid Contact Lens Materials

Features	Optimum Infinite	Boston XO	Optimum Comfort	Boston EO	Optimum Classic	Boston ES	Contaperm F2 low
DK Fatt ISO 9913-1	180/ 135*	100/75*	65/49*	58/44*	26/19.5*	18/15*	11/8*
Manufacturer	Contamac	Polymertechnology	Contamac	Polymertechnology	Contamac	Polymertechnology	Contamac
Wettability angle		49° (2)	6° (3)	49° (2)	12° (3)	52° (2)	19° (2)
Hardness (4)	81	79.9	79	83	83	85.4	83
Refractive index	1.44	1.415	1.437	1.429	1.45	1.443	1.46
Handling tint	blue red green clear	blue red green lila	blue green	blue	blue green	blue green	blue green clear
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.

Materials

Material Training with Martin Conway from Contamac

BoriFlex

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

BoriFlex ASP

BoriFlex SMS

Other variants:

Multifocal Variations

Bifocal (Bf)

Simple progressive (Sp)

Multi progressive (Mp)

Technical Data

Additional information

Fitting advices

Fitting advices for gas permeable contact lenses

Geometry

Advice for Toriflex

For Toriflex TP only:

First contact lens choice

Progression system and central optic zone (Zoc)

Reading zone choice

Central optic zone, position and diameter:

Rigid Contact Lens Materials

Quality assurance

Materials

SwissLens

Subscribe to our Newsletter

Products

Contact us

About SwissLens

Legal Information