1. VisTor The new Toric IOL by Hanita Lenses
Sept 2013

2. Definition
Astigmatism - The cornea has different radii (Dpt) in different meridians, causing the focus to spread between two points.

3. Effect on vision
The image may be clearly focused on the retina in the horizontal plane, but not in the vertical plane:
Or vice-versa:
Or at any other angle…

4. Diagnosis: Regular astigmatism
IOLMaster
Topographer

5. Diagnosis: Irregular Astigmatism
IOLMaster
Topographer

6. Correction of astigmatism by IOL
Astigmatic cornea can be represented as cylinder, causing vertical rays focus differently from horizontal ones, leading to dispersion of focus and blurry image quality. This can be corrected by placing additional cylinder of the same power, rotated by 900.
This is the principle of action of the toric IOL. The IOL corrects the dispersion induced by the cornea, focusing the rays in one point on the retina and restoring the sharp image quality.

7. Correction of astigmatism by IOL
Astigmatic cornea can be represented as cylinder, causing vertical rays focus differently from horizontal ones, leading to dispersion of focus and blurry image quality. This can be corrected by placing additional cylinder of the same power, rotated by 900.
This is the principle of action of the toric IOL. The IOL corrects the dispersion induced by the cornea, focusing the rays in one point on the retina and restoring the sharp image quality.

8. VisTor Platform
Excellent stability in the capsular bag endurance to rotation, tilt & decentration.
Visible axis marking even for small pupils
Injection through 1.8 mm incision
3600 enhanced square edge decrease PCO

9. Aspheric optics
Anterior toric surface, posterior aspheric surface
Designed using Arizona Uni. model, with statistical eye data of old population
Standard corneal spherical aberration +0.27µ, corrected by natural lens
IOL asphericity -0.14, leaving residual +0.13µ for better contrast sensitivity, shown in Prof. Tetz study
Total correction of Toric aberrations

10. Raw material
Hydrophilic acrylic 25% water, produced by Benz R&D (USA)
>10 years clinical experience and > 1 million implantations of Hanita’s IOLs
Violet light blocker equivalent to natural chromophore.
Better transmission of blue light than yellow IOLs – important for dim light situations
High Abbe number, low Refractive index means less chromatic aberrations & higher contrast sensitivity

11. Toric Calculator order form,on

12. Toric Calculator, on

13. Participating centers 180 Total no of eyes (planned) Follow-up visits
Clinical Study + Post marketing evaluation
Germany, France, Israel, Colombia, Czech republic 9
Participating centers
180
Total no of eyes (planned)
Pre-op, surgery, 1 & 3 months
Follow-up visits 45
Implanted eyes 14
Eyes with follow-up >1M

14. Preliminary study for :
Clinical Study preliminary results (Sept 2013)
Results
Preliminary study for :
rotational stability
&
Refraction accuracy

15. Clinical Study preliminary results (Sept 2013)
70% of patients obtained Cylinder under 0.5D post op

16. Clinical Study preliminary results (Sept 2013)

17. Clinical Study preliminary results (Sept 2013)*
*Patient with refraction of: Sph=0, Cyl=0

18. Clinical Study preliminary results (Sept 2013)
* Significant rotation (>15º) has occurred in 2 eyes with high AL (>26mm). Both cases are not included above due to short follow-up time (<1M). Due to this, for improved stability in long eyes, IOLs below 16 dpt are provided with external diameter of 11.5mm

19. - The Hanita VisTor is a MICS lens with toric optics
Preliminary conclusions
(Sept 2013)
- The Hanita VisTor is a MICS lens with toric optics
- It can be implanted through 1.8 mm incisions, with
no impairment of existing corneal astigmatism
- It can be easily positioned, by clockwise and
counterclockwise rotation
- For improved stability in long eyes, IOLs below 16 dpt are provided with external diameter of 11.5mm
- Precise refraction and correction of astigmatism

20. Thank you