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VisTor The new Toric IOL by Hanita Lenses Sept 2013.

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Presentation on theme: "VisTor The new Toric IOL by Hanita Lenses Sept 2013."— Presentation transcript:

1 VisTor The new Toric IOL by Hanita Lenses Sept 2013

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

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 IOLMaster Topographer Diagnosis: Regular astigmatism

5 IOLMaster Topographer Diagnosis: Irregular Astigmatism

6 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 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. Correction of astigmatism by IOL

7 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 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. Correction of astigmatism by IOL

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

9 Aspheric optics Standard corneal spherical aberration +0.27µ, corrected by natural lens Designed using Arizona Uni. model, with statistical eye data of old population Anterior toric surface, posterior aspheric surface 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 Violet light blocker equivalent to natural chromophore. >10 years clinical experience and > 1 million implantations of Hanita’s IOLs Hydrophilic acrylic 25% water, produced by Benz R&D (USA) Better transmission of blue light than yellow IOLs – important for dim light situations High Abbe number, low Refractive index o ) means less chromatic aberrations & higher contrast sensitivity

11 Toric Calculator order form, on

12 Toric Calculator, on

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

14 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 *Patient with refraction of: Sph=0, Cyl=0 *

18 Clinical Study preliminary results (Sept 2013) * Significant rotation (>15 º) 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 Preliminary conclusions (Sept 2013) (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


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