The Precizon Presbyopic is designed with a patented CTF optic. This is an optic that has multiple segments for far and near on its anterior surface. Between the segments, a smooth transition from far to near is achieved. This transition offers a constant defocus between the two sharp focal points, delivering excellent intermediate vision.
Precizon Presbyopic NVA
Model 570A1Precizon Presbyopic is a hydrophilic acrylic IOL with a CTF (Continuous Transitional Focus) optic designed to correct presbyopia.
- Reduces glare & halos
- Decentration tolerance
- Natural vision at all distances
Designed for...
Natural vision at all distances
The transition 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.
Decentration tolerance
In cases of tilt or misalignment, the patient can still benefit from near and far vision as the segmented zones allow a steady light distribution.
Reducing glare and 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.
Specifications
|
Model |
570 A1 Precizon Presbyopic NVA | 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 |
| First near segment direction (in / out) |
outwards |
| Rotated segment width |
0.60 mm |
| Number of segment rings |
3 n |
| UV cut off |
<10% @370 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 |
| Haptic configuration |
Open modified C-loops with offset shaped haptics |
| Lens material |
Hybrid hydrophobic & hydrophilic monomers. Ultraviolet filtering HEMA/EOEMA copolymer |
| Lens color |
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 |
118.3 |
| 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) |
Explanation of a CTF optic Downloads
-
Precizon Family Brochure
-
Precizon Presbyopic NVA Factsheet
-
Angle Kappa leaflet
-
Precizon Patient Brochure
Publications
-
2024
Analysis of the visual function with the continuous transitional focus intraocular lens Precizon Presbyopic
Dr. Luis León-Ibáñez, David P. Piñero Clínica Oftalmológica MOAT (Castellón, Spain)
-
2024
Visual and patient reported outcomes provided by a refractive multifocal intraocular lens based on continuous transitional focus
Jorge L. Alió, Antonio Martínez-Abad, Ramón Ruiz-Mesa, Hyo Myung Kim, Javier Mendicute, Filomena J. Ribeiro, Mike P. Holzer & Mario Cantó-Cerdán
-
2023
Good Acuity at Near and Far: New presbyopia-correcting lens reveals predictable refractive outcomes
Eurotimes
-
2021
crstodayeurope.com/articles/2021-oct/precizon-presbyopic-and-presbyopic-toric/
Javier Mendicute MD, PHD. Insert to cataract & refractive surgery Today Europe.
-
2018
Continuous Transitional Focus (CTF): A New Concept in Ophthalmic Surgery
Ramón Ruiz Mesa MD, Tiago Monteiro MD. Ophthalmology and Therapy.
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