1 / 18

Intracorneal Inlays for Presbyopia

Insructional Course 59 19/9/2011. Intracorneal Inlays for Presbyopia. Moderator Ioannis Pallikaris Instructors Stephen Slade John Vukich Dimitrios Bouzoukis. KAMRA (Formerly ACI 7000) (Acufocus). VUE+ (Formerly Presbylens) (ReVision). FLEXIVUE MICRO-LENS (Presbia).

nadine-morse
Télécharger la présentation

Intracorneal Inlays for Presbyopia

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Insructional Course 59 19/9/2011 Intracorneal Inlays for Presbyopia Moderator Ioannis Pallikaris Instructors Stephen Slade John Vukich Dimitrios Bouzoukis

  2. KAMRA (Formerly ACI 7000) (Acufocus) VUE+ (Formerly Presbylens) (ReVision) FLEXIVUE MICRO-LENS (Presbia)

  3. INLAYS CHARACHTERISTICS

  4. Slit Lamp KAMRA CORNEAL INLAY (ACUFOCUS)

  5. KAMRA Corneal Inlay 3.8mm Diameter - 5 Microns Thick - 1/10th the Thickness of a Sheet of Paper (7.5 mm radius), and Flexible enough to Bend to Different Curvatures without Buckling Mass is 71-142 Micrograms - about the Weight of a Salt Crystal 5 microns AcuFocus Corneal Inlay in profile. KAMRA Inlay

  6. Inlay Design 8,400 micro-perforations(5-11µ) Pseudo-random pattern Maximize nutrient flow Minimize visual symptoms KAMRA Inlay

  7. Optical Principals of Inlay Light Rays Pass through the Small Aperture Over a Small Angle, Increasing the Depth of Focus Distance Vision is Minimally Affected 3.8mm diameter 1.6mm f22 KAMRA Inlay

  8. Surgical Procedure Pocket Flap KAMRA Inlay

  9. VUE+ CORNEAL INLAY (ReVision)

  10. Optical Principals of Inlay Light Rays Pass through the Small Aperture Over a Small Angle, Increasing the Depth of Focus Distance Vision is Minimally Affected Inlay Design 3.8mm diameter 1.6mm f22 VUE+ Inlay

  11. Presbyopic Corneal MicroLens • 2 mm diameter, ~30 μm thickness Product Overview • Hydrogel corneal microlens implanted after creating a femtosecond flap • Restores near and intermediate vision in patients with myopic, hyperopic, and emmetropic presbyopia • Transparent, biocompatible and mimics a healthy cornea • Removal with reversible vision 11 VUE+ Inlay

  12. How It Works Stromal Cushion 100 µm Bowman’s Layer Inlay Thickness 30 µm Flap Bed • Inlay has same refractive index as cornea but increases curvature in the center of the pupil 12 VUE+ Inlay

  13. Optical Design 1 Near 2 Intermediate 3 Distance 1 2 3 3 2 Refraction map (from Tracey wavefront data) 1 1 2 3 Corneal Cross-section Average radial refraction (Tracey) FLEXIVUE MICRO-LENS CORNEAL INLAY (PRESBIA)

  14. Inlay Design Thickness: 20μm Diameter: 3mm Peripheral zone with refractive power: +1,25D to +3,00D Central zone without refractive power FLEXIVUE MICRO-LENS Inlay

  15. Inlay Characteristics • Acts changing the refractive index of the cornea • Donut shape bifocal refractive power • The lens is implanted into the stroma of the cornea on the non-dominant eye, inside a corneal tunnel created using femtosecond laser. • The lens is “Invisible” • Biocompatible hydrophilic material with a central hole to increase more the nutrient flow. • The refractive effect is pupil depended, inreasing during near vision and decreasing during far vision, changing less the far vision in the operated eye than in a classic monovision procedure FLEXIVUE MICRO-LENS Inlay

  16. The concept of “Smart Monovision” There is a central myopic effect only when we analyze the 3,5mm zone. FLEXIVUE MICRO-LENS Inlay 3 months Post – Inlay Preop 3.5 mm Higher Order Aberrations Higher Order Aberrations Seidel Sphere -0.34 Cylinder -0.50 X 160 Seidel Sphere -2.05 Cylinder -0.50 X 174 Near Higher Order Aberrations Higher Order Aberrations 5.0 mm Far Seidel Sphere -0.54 Cylinder -0.26 X 167 Seidel Sphere -0.75 Cylinder -0.36 X 161

  17. iTrace wavefront analysis UDVA: 20/25, J1 Slit lamp photo and eye image taken from the iTrace. Inlay centered on visual axis-coincides with pupil center Refractive map of total ocular aberrations in the area of the inlay. The inlay’s peripheral part creates a myopic effect whilst the central part remains emmetropic FLEXIVUE MICRO-LENS Inlay

  18. Setting of the laser parameters iFS 150 • Femto parameters: • iPockets software • Depth: 280-300 • Diameter: 4 mm • Bed energy:0.60-0,70 • Spot-Line Sep: 2-2 (or 3-3) • Side cut energy: 1.6-1.7 • Side cut angle: 160 • Deactivate pocket • Suction-applanation FLEXIVUE MICRO-LENS Inlay

More Related