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Ophtec Precizon Presbyopic Toric IOL

Precizon Presbyopic is a hybrid, acrylic IOL designed to correct Presbyopia and Astigmatism.

For the correction of presbyopia, this lens has a multiple segments optic, CTF (Continuous Transitional Focus) for far and near, on the anterior surface. A smooth transition from far to near is achieved between these segments. This transition offers a constant defocus between the two sharp focal points, delivering excellent intermediate vision.

A  TCT (Transitional Conic Toric) optic is the foundation of the multifocal segments. A TCT optic is tolerant of misalignment because different conic constants are calculated. Not only on the horizontal and vertical axis, but also between 0 ° and 90 ° degrees.

The patented TCT and CTF technology sets the Precizon Presbyopic Toric IOL apart from other toric presbyopic corrective IOLs on the market.

This lens has a broad central zone. The visual axis passes through the wider central segment avoiding visual disturbances by the Kappa Angle.

Natural Vision at all distances

The CTF aspheric surface forms a broad beam of light, a zone with an enhanced depth of focus with uninterrupted high-quality images for the brain to translate into clear vision at all distances

Tolerance of misalignment

In a significant percentage of cases, IOLs tend to rotate a few degrees before they stabilize. This leads to a loss of quality of vision in regular toric IOLs. The TCT optic however is designed to be more forgiving to decentration with less loss of quality of vision

Reducing Glare & Halos

Using segments instead of concentric rings reduces photonic phenomena, allowing patients to adapt more naturally to their new vision

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Description & Technical Specs
  • Description & Technical Specs

    Specifications:

    Model: 575 Precizon Presbyopic Toric
    One piece IOL
    Optic type: Aberration Negative (- 0.11 μm) Continuous Transitional Focus (CTF) optic
    Central far zone size Y/X: 1.4 / 2.6 mm
    Rotated segments width: 0.60 mm
    Number of segments rings: 3 n
    Refractive Index: 1.46
    Abbe number: 47
    Optic Powers: Sphere: +5.0 D to + 34.0 D (0.5 D increments) * / **
    Cylinder: +1.0 D to + 6.0 D (0.5 D increments)
    Power add +2.75 D.
    Haptic configuration: Open modified C-loops with offset shaped haptics
    Lens Material: Hybrid hydrophobic & hydrophilic monomers. Ultraviolet filtering HEMA/EOEMA copolymer
    Lens colour: Clear
    Body Ø: 6.0 mm
    Overall Ø: 12.5 mm
    Haptic Angle:
    Centre thickness range: 0.8 to 1.3 mm
    Body edge thickness: 0.4 mm
    A-constant ultrasound: 118.0
    A-constant optical: 118.8 (SRK T)
    118.8 (SRK II)
    0.126 (Haigis aO)
    0.355 (Haigis a1)
    0.157 (Haigis a2)
    5.51 (Hoffer-Q pACD)
    1.72 (Holladay 1 sf)
    1.78 (Barrett suite LF)
    0     (Barrett suite DF)
    Light distribution 40/60 near/far

    * The minimum Sphere power is 1.5 + C e.g. 575A107TY10 =  S5.0 & C3.5 (1.5+3.5=5.0)
    ** The maximum Sphere power is 35 – C e.g. 575A111TY59 = S29.5 & C5.5 (35-5.5=29.5)