1. New Keraring SI-6 for Keratoconus treatment ASCRS, BOSTON Francisco SAnchez Leon MD Instituto Novavision Cd. México Tel No financial interest to mediphacos Co.
150°X 200m
150° X 300m

2. Pourpose
Evaluate the corneal remodeling using the new Keraring SI 6 for the Keratocous Treatment.

3. Corneoplastic Techniques
Mechanical methods
Intracorneal segments
Incisional procedures
Biochemical methods
Cross-linking UV light
Conductive Keratoplasty (CK)
Mix methods
Excimer laser ablation
Inlays (Acufocus)
©1997 – 2006 IntraLase Corp. All rights reserved. Confidential Mkt Doc 470 Rev. A

4. Optimized prismatic design
Scalene triangular shape SI-6 compared to Isosceles triangle in SI-5.
Improves effect and optimizes total internal reflection, reducing glare and halos

5. 800µ base width instead of 600µ
Wider base provides 25% greater implant volume and compensates for reduction of effect in the larger optical zone

6. When should Keraring SI-6 implantation be considered?
Mesopic pupil diameter ≥ 5mm
BCVA is ≥ 0.6
Moderete Sphere ≤ 5 D
Cylinder value is ≤ 5 D
Segment thickness should not exceed 60% of the minimum pachymetry at the 5.5 optical ring zone
When PRK is planned as a second procedure.
When phakic IOL implantation is planned as a second procedure

7. Different Arc Lengths for each Refraction and Topography appearance

8. New Keraring SI-6 IS-6 IntraLase 60 Hz parameters
Depth in Cornea 80% at 5.5 mm
Incision Axis at steepest meridian
Entry Cut Length 1 mm
Inner Diameter 6.0 mm
Outer Diameter 6.8 mm
Ring Energy 1.5
Entry Cut Energy 1.3

9. New Keraring SI-6 150°Asymmetric Thickness Implantation
150°X 200m
150° X 300m
-3.50/-4.00X135°=20/60
-0.50/-1.25 X 30°=20/30

10. New Keraring SI-6 120°symmetric implantation
120°X 250m
+1.50 / X 20°= 20/60
Plano/-1.25 X 45°= 20/30

11. Single Inferior Segment for PMD Corneoplasty Achivement
Preop
Postop

12. New SI-6 Keraring Early Conclusions
Keraring SI-6 achieves Corneoplasty purposes.
Keraring SI-6 is not intended to replace the IS-5, but rather intends to offer the surgeon additional tools to customize the corneal remodeling according to each individual patient’s needs