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Rose k

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Hossein Mirzaie
Hossein Mirzaie
Health & MedicineBusiness
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Contact Lens Optics Dr. Mohammad Amiri , OD Department of Optometry ,Faculty of Rehabilitation Shahid Beheshti Medical Sceince University Vision Care of Menicon
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Soft Contact Lenses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Soft Contact Lenses ,[object Object],[object Object],[object Object],[object Object]
Soft Lenses ,[object Object],[object Object],[object Object]
Soft Contact Lenses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Soft Toric ,[object Object],[object Object],[object Object],[object Object],[object Object]
Soft Contact Lenses Material ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Soft Contact Lens Materials ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Soft Contact lenses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Soft Contact Lenses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Extended Wear Soft Lenses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Fitting Soft Lenses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Edge Appearance
Changes to fit ,[object Object],[object Object],[object Object]
Looser Fit ,[object Object],[object Object],[object Object],[object Object],[object Object]
Summary of Market ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Where is the optics?
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Accommodative Demand ,[object Object],[object Object],[object Object]
Accommodative Demand ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Accommodative Demand ,[object Object],[object Object],[object Object],[object Object]
Accommodative Demand ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Accommodative Demand ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Accommodative Demand ,[object Object]
Convergence Demand ,[object Object],[object Object],[object Object],[object Object],[object Object]
Convergence Demand ,[object Object],[object Object]
Convergence Demand ,[object Object],[object Object],[object Object],[object Object],[object Object]
Astigmatism ,[object Object],[object Object],[object Object],[object Object]
Astigmatism ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Astigmatism ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Relative Spectacle Magnification ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Relative Spectacle Magnification ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Image Size ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Complications ,[object Object],[object Object],[object Object]
Complications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Acanthamoeba
Hard Contact Lenses
[object Object],[object Object],[object Object]
Power Cross ,[object Object],[object Object],[object Object],[object Object],[object Object]
Power Cross ,[object Object],[object Object],[object Object]
Power Cross ,[object Object],[object Object],[object Object]
Tear Lens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Example ,[object Object],[object Object],[object Object],[object Object],[object Object]
Tear Lens ,[object Object],[object Object],[object Object],[object Object]
Tear Lens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Parameters of Change ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hard Contact Lenses ,[object Object],[object Object]
Hard Contact Lenses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hard Contact Lens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hard Contacts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hard Contacts ,[object Object],[object Object],[object Object],[object Object],[object Object]
Fit & Evaluation ,[object Object],[object Object],[object Object],[object Object],[object Object]
Fit & Evaluation ,[object Object],[object Object],[object Object]
Centration
Fit & Evaluation ,[object Object],[object Object],[object Object]
Fluorescein Pattern
Fluorescein
Alignment
[object Object],[object Object],[object Object]
Wettability
Plasma Surface Treatment ,[object Object],[object Object],[object Object],[object Object],[object Object]
Plasma Treatment ,[object Object],[object Object],[object Object]
RGP Complications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
GPC
Use of Contacts in Clinical Practice
Corneal ,[object Object],[object Object],[object Object],[object Object],[object Object]
Keratoconus ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Keratoconus
Keratoconus
Synergeyes ,[object Object],[object Object],[object Object],[object Object]
Synergeyes
Corneal ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
3 lenses for most of the situations The most common cones : nipple and ovale
[object Object],2 mm 6.70 8.70
The more advanced is the cone , higher the slope (flattening) is.
[object Object],[object Object],[object Object],[object Object],[object Object]
Good center and periphery
A lens is expressed by ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
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
[object Object],[object Object]
How can we increase the AEL ? ,[object Object],OZ OZ AEL small OZ > AEL large OZ
[object Object],How can we increase the AEL ? Rayon périphérique Rayon périphérique
AEL Periph.curves ++ > AEL Periph.curves +
Rose K Principle Lens changes with the cone evolution ,[object Object],[object Object]
Rose K lenses principle ,[object Object],[object Object],[object Object],[object Object],[object Object]
For a 8.70mm diam.
Axial Ege Lift (AEL)  Edge Lift (EL) ,[object Object],[object Object],[object Object],[object Object]
available EL +3.00 à -1.3 / 0.1 ,[object Object],[object Object],[object Object],[object Object],The majority of Rose K are done with 3 EL
Trial Box ,[object Object],[object Object],[object Object]
Fitting steps ,[object Object],7,00 mm 12 ⁰ 6,60 mm 102⁰ Km. 6.80 Cyl. 3,00
[object Object],[object Object],[object Object],[object Object],[object Object],STEEP FLAT OPTIMALE
Remarques ,[object Object],[object Object]
[object Object],[object Object],[object Object],Too thin Optimal Too wide
[object Object],Up riding .steep the lens .and/or reduce diameter .and/or reduce EL Low riding .Flatten the lens .and/or increase diameter .and/or increase EL Optimal
[object Object],[object Object],[object Object],[object Object]
[object Object]
Spherical Aberrations ,[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
Rose K2 Advantages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Indications ,[object Object],[object Object],[object Object],PMD DMP Globus Lasik
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
5 Edge Lift +0.6 /+1.2 / -0.5 / -1.0
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
BC plat OK / serré serré
EL périphérie très serrée EL Lent (-) périphérie serrée EL standard Périphérie ok EL rapide (+)
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
[object Object],[object Object]
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
ROSE K2 Post Graft: Rose K2 PG ,[object Object],[object Object],[object Object],[object Object]
[object Object]
5 Edge Lift +0.6 /+1.2 / -0.5 / -1.0
www.menicon.fr [email_address] [email_address] [email_address] Thank you for your attention

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Rose k

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  • 2. Contact Lens Optics Dr. Mohammad Amiri , OD Department of Optometry ,Faculty of Rehabilitation Shahid Beheshti Medical Sceince University Vision Care of Menicon
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  • 20. Where is the optics?
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  • 68. GPC
  • 69. Use of Contacts in Clinical Practice
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  • 77.
  • 78. 3 lenses for most of the situations The most common cones : nipple and ovale
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  • 80. The more advanced is the cone , higher the slope (flattening) is.
  • 81.
  • 82. Good center and periphery
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  • 84.
  • 85. 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
  • 86.
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  • 88.
  • 89. AEL Periph.curves ++ > AEL Periph.curves +
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  • 91.
  • 92. For a 8.70mm diam.
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  • 111. 5 Edge Lift +0.6 /+1.2 / -0.5 / -1.0
  • 112. 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
  • 113. BC plat OK / serré serré
  • 114. EL périphérie très serrée EL Lent (-) périphérie serrée EL standard Périphérie ok EL rapide (+)
  • 115. 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
  • 116.
  • 117. 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
  • 118.
  • 119.
  • 120.
  • 121. 5 Edge Lift +0.6 /+1.2 / -0.5 / -1.0
  • 122. www.menicon.fr [email_address] [email_address] [email_address] Thank you for your attention

Editor's Notes

  1. Les indications de ces 3 lentilles sont… Pour chaque lentille, le protocole d’adaptation est le même : centre, périph,diam…
  2. Pour un rayon central cambré et un diam.donné
  3. For 8.7 diamètre Trial set. Different OZ for different diamètres.Set OZ for any base but does vary with diamètre.