BoriFlex

Las lentes Rgp esféricas OrbiFlex están disponibles en 2 geometrías de superficie posterior diferentes como Aspherical y Multicurve. Esto promete un ajuste óptimo y aumenta la comodidad del cliente.

Descripción

Geometría

BoriFlex ASP

  • Diseño asférico
  • Centro esférico
  • 1 aplanamiento asférico
  • Excentricidad: 0.10 – > 0.90
  • Toricidad corneal < 3/10 mm

BoriFlex SMS

  • Diseño multicurva
  • Centro esférico
  • 3 aplanamientos esféricos ajustables en comparación con la excentricidad de la córnea
  • Excentricidad: 0.10 – > 0.90
  • Toricidad corneal < 5/10 mm

Otras variantes:

  • BoriFlex SA: Esférica con pequeño aplanamiento asférico
  • BoriFlex S2A: Esférica con aplanamiento bi-asférico
  • BoriFlex S3S: Multicurve con 3 aplanamiento esféricos fijos

Variaciones multifocales

Bifocal (Bf)

Bifocal Bf
  • 2 zonas ópticas concéntricas lejos/cerca
  • CD o CN

Simple progresivo (Sp)

Simple progresivo Sp
  • 3 zonas ópticas concéntricas lejos / intermedio / cerca
  • CD o CN

Multi progresista (Mp)

  • múltiples zonas esféricas concéntricas: lejos / cerca
  • CN= centro cerca

Datos técnicos

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
Addition+0.50 dpt+4.00 dpt0.01 dpt
Central optic Zone (Zoc)1.00 mm5.00 mm0.01 mm
Eccentricity0.100.900.01

Información adicional

Application

Indication

Correction Type

,

Lens Type

Diseñado por

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
RequirementsBifocal BfSimple progressive Sp
Myopia Addition < 1.75 dpt
Myopia: Addition ≥ 1.75 dpt
Priority in distance vision
Priority in near visiondominant eyenon 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 1st choice: standard pupil (3.50–4.00 mm) with normal lighting

Bifocal BfBifocal BfSimple progressive SpSimple progressive Sp
PositionCentre near (CN)Centre Distance (CD)Centre near (CN)Centre Distance (CD)
Dominant eye2.253.752.504.00
Non-dominant eye2.753.253.003.50
Undefined2.503.502.753.75

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

Materiales de lentes de contacto rígidos

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/seg) [ml 02/(ml × mm Hg)]

** 10-11 (cm2/seg) [ml 02/(ml × hPa)]

Material por defecto: Optimum Classic Blue

Garantía de calidad

Estos materiales están en conformidad con la norma ISO 10993-1 que define la biocompatibilidad de los materiales.

El proceso de fabricación de SwissLens garantiza esta biocompatibilidad incluso después del proceso de fabricación, en particular sin añadir material de pulido. Este estándar es requerido por el sistema de garantía de calidad de SwissLens.

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