Mini-Scleral Design - MSD Large RGP Vaults the cornea
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The document discusses Mini-Scleral Design (MSD) contact lenses and the Rose K2 contact lens system for fitting keratoconic eyes. MSD lenses vault the cornea and rest on the sclera, creating a fluid-filled environment to treat corneal and anterior segment conditions. Rose K2 lenses use different edge lifts and peripheral curves to closely fit the steepened central cornea and flattened periphery of keratoconic eyes, improving comfort and vision. The fitting process involves measuring keratometry, selecting the initial base curve and edge lift, and adjusting for central touch, peripheral fit, and lens centration/mobility.
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Mini-Scleral Design - MSD Large RGP Vaults the cornea
- 7. A New Option for Keratoconus Keratoconus Intacs -1 Day PKP -1 Week
- 9. Reshape the Cornea for CL Success
- 10. History Adjustable Ring 1984
- 13. Watch the Pre-op and Post-op mire INTACS Normalize Corneal Shape The INTACS Procedure Courtesy David Schanzlin, MD Shiley Eye Inst. UCSD
- 14. INTACS – PKP Comparison +8.00 (.)-2.00 X 180° -0.75 Transplant Intacs
- 17. 3 lenses for most of the situations The most common cones : nipple and ovale
- 19. The more advanced is the cone , higher the slope (flattening) is.
- 21. Good center and periphery
- 24. Axial Edge Lift AEL AEL is the height that seperates the edge of the lens and the edge of the lens if this one wouldn’t have peripheral curves. For known BC and total diameter the higher AEL is, the higher the flattening is
- 28. AEL Periph.curves ++ > AEL Periph.curves +
- 31. For a 8.70mm diam.
- 50. 5 Edge Lift +0.6 /+1.2 / -0.5 / -1.0
- 51. 1st lens: BC = K’ +0.30 mm Fitting: 1. Keratometry 2. BC 3. central Fitting 4. peripheral fitting 5. Centration/Mobility (=>Diameter) 6.Power Ex. 6.80/5.50 5.50 +0.30 = 5.80
- 52. BC plat OK / serré serré
- 53. EL périphérie très serrée EL Lent (-) périphérie serrée EL standard Périphérie ok EL rapide (+)
- 54. Mobility Look for enough mobility to insure enough tear flow Mobility ++ Mobility -- increase diameter Decrease diameter decrease BC Flatten BC 0 decrease l’Edge Lift increase l’Edge Lift
- 55. 1st lens = Km - 0.30 mm Fitting : 1. Keratometry 2. BC 3. central fitting 4. peropheral fitting 5. Centration / mobility 6. Power Ex. 6.80/5.50 6.15 - 0.30 = 5.85
- 58. www.mencon.fr [email_address] [email_address] [email_address] Thank you for your attention
Notas del editor
- Slide 11 The INTACS design that is approved for the correction of low myopia in Europe and in the United States consists of two 150 degree arcs of PMMA that are lathe cut to specified thicknesses. The inner diameter of the INTACS is 6.8 mm and the outer diameter is 8.1 mm. The INTACS are normally positioned at 2/3 depth, centered on the geometric corneal center, and they are normally oriented in a vertical pattern as demonstrated in this slide.
- A head to head comparison of keratoplasty and Intacs shows that the major advantages of Intacs are the rehabilitation time (several weeks as opposed to several months).
- A head to head comparison of keratoplasty and Intacs shows that the major advantages of Intacs are the rehabilitation time (several weeks as opposed to several months).
- Les indications de ces 3 lentilles sont… Pour chaque lentille, le protocole d’adaptation est le même : centre, périph,diam…
- Pour un rayon central cambré et un diam.donné
- For 8.7 diamètre Trial set. Different OZ for different diamètres.Set OZ for any base but does vary with diamètre.