Precizon Presbyopic NVA
Model 570 / A1
Precizon Presbyopic is a hybrid, acrylic IOL with a CTF (Continuous Transitional Focus) optic designed for the correction of presbyopia.
What makes this lens unique?
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CTF (Continuous Transitional Focus) optic
A CTF optic is an optic with an anterior surface with multiple segments for far and near. A smooth transition from far to near is achieved between the segments. This transition offers a constant defocus between the two sharp focal points, delivering excellent intermediate vision.
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CTF is designed for:
- Natural Vision at all distances
The transitional zones of the CTF optic offer a full range of vision from near to infinity with a smooth continuous transition. 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.
- Reducing Glare & Halos
The misalignment tolerance and the use of segments instead of concentric rings reduce photic phenomena thereby helping patients to adapt more naturally to their new vision.
- Decentration tolerance
In cases of tilt or misalignment, the patient can still benefit from the same near and far vision as the segmented zones allow an equal and steady light distribution.
Specifications:
| Model: | 570 A1 Precizon Presbyopic NVA | One-piece IOL |
|---|---|
| Optic type: | Aberration Negative (- 0.11 μm), Continuous Transition Focus (CTF) optic |
| Central far zone size Y/X: | 1.4 / 2.6 mm |
| First near segment direction (in / out): | outwards |
| Rotated segments width: | 0.60 mm |
| Number of segments rings: | 3 n |
| UV cut off: | <10% @360 nm |
| Refractive Index: | 1.46 |
| Abbe number: | 47 |
| Optic Powers: | +1.0 D to + 35.0 D (0.5 D increments) Power add +2.75 D. Astigmatism correction |
| 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: | 0° |
| 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) |
Publications:
| 2018 Ramón Ruiz Mesa MD, Tiago Monteiro MD Continuous Transitional Focus (CTF): A New Concept in Ophthalmic Surgery Ophthalmology and Therapy, April 20, 2018 |
Patient information:
Patient information on the Precizon Presbyopic IOL can be found on the patient website:
Contact us for more information:
Email: sales@ophtec.com
Tel: +31 50 525 1944
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