копие от Varilux physio for attila 2


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  • Why “High Resolution Vision” ? When we ask consumers (+45 y.o.) about essential qualities they are looking for in a pair of progressive eyeglasses, their spontaneous replies show that they care less about the visual comfort or aesthetics than about Quality of Vision Several studies we carried out * confirm the same statement; Today, the number ONE expectation is “Clear Vision/ Good Vision” - and we took into account this to design Varilux Physio lens. Since the eyes perform in highly demanding conditions (created by changing lighting or high-tech devices such as cell phones, digital cameras and screens,…), presbyopic people want to see well, they look for precision, a true visual sharpness rather than just comfortable vision. “ High Resolution vision” is therefore an unparalleled promise that meets the consumers’ main expectation. *Sources : Varilux Physio international Market Test 2005 Varilux Physio vs Sola One clinical study, UK 2005 Varilux Physio vs Hoyalux Id clinical studdy, Spain 2005
  • As wearers’ needs are the very heart of the Varilux approach, the latest “jewel” of the Varilux family is designed for High Resolution Vision. Varilux Physio respects specific PHYSIOLOGICAL eye requirements in each gaze direction and meets wearers’ expectations in the 3 main areas of the lens: far, intermediate and near.
  • To sum up, Varilux Physio provides the High Resolution Vision thanks to the application of physiological research in each visual distance. It innovates in the three parts of the lens: far, intermediate and near area: Far Vision Visual sharpness is particularly important in far vision. All progressive lenses generate, as a result of their design, higher order aberrations. These aberrations lead to a loss of visual sharpness. The Varilux Physio design minimizes, for the first time, these higher order aberrations (which include Coma). Benefit for wearer: enhanced visual sharpness Intermediate Vision Findings from Physiology show that in presence of astigmatism the eye prefers to focus on vertical lines. The Varilux Physio design for the first time ever directs the axis of residual astigmatism vertically in order to reply to this physiological need. Benefit for wearer: enhanced acuity field s Near Vision Findings from Physiology show that various postures during different tasks at near lead to continuous visual and head adjustments. The Varilux Physio design extends vertically the area with stabilized power in order to minimize adjustments. Benefit for wearer: sharpness and wider acuity field for greater comfort All these exclusive features provide the High Resolution Vision no matter the gaze direction !
  • Now, a few words about the Coma itself and its meaning with regard to an ophthalmic lens. The Coma is very often explained on a Single vision lens as follow: If the light goes through the center of a lens it can be focused to a point. If the light goes through the lens off axis ( at an angle) the light will not focus to a point and look like a fuzzy circle, giving a comet-like image ( hence the name coma). The farther off axis, the larger the circle (the stronger the coma aberration). However, the “Coma” aberration is even more critical on a Progressive lens. In addition to “off axis” effect, it is also generated by the local* power variation Coma exists therefore in all PALs. Coma is proportional to the pupil diameter and affects the visual acuity and contrast especially in Far Vision where the pupil is bigger. The Coma control is therefore crucial in Far Vision for a progressive lens. *local = gradient of power integrated on the pupil surface
  • The impact of different aberrations on visual perception can be illustrated with this random sentence… The Coma impact is obvious: the image is blurred like in presence of power error or astigmatism.
  • Varilux Physio is the only progressive lens that controls and eliminates the Coma aberration in Far Vision. As a result, the wearer benefits from enhanced Vision Sharpness on a large field of vision (larger acuity fields)
  • The application of this physiological findings to a progressive lens can be very beneficial. We know that all progressive lenses generate some unwanted astigmatism around the meridian. So far, PALs manufacturers tended to manage the amplitude and the location of this unwanted defect. However, for the first time Varilux has cared about the orientation of astigmatism while it is so important for the eye natural functioning. To meet the eye preference for vertical lines the residual astigmatism in intermediate vision should be oriented vertically –> (+cyl)90° In this case the vertical focus is placed nearby the retina, while the horizontal one is far behind - we create the visual conditions the eye likes !
  • Varilux Physio takes into account this physiological data and controls perfectly the unwanted astigmatism in intermediate vision. It reduces not only its amplitude and locates its highest value far away from the meridian but also it directs the axis vertically to meet the eye natural preference. As a result, the wearer will perceive enhanced acuity fields in Intermediate vision.
  • Physiology : the part of the lens used by the eye when focusing in near vision tasks is correlated to the subject posture Physiology : the part of the lens used by the eye when focusing in near vision tasks is correlated to the subject posture Physiology : the part of the lens used by the eye when focusing in near vision tasks is correlated to the subject posture Physiology : the part of the lens used by the eye when focusing in near vision tasks is correlated to the subject posture Physiology : the part of the lens used by the eye when focusing in near vision tasks is correlated to the subject posture
  • With Varilux Physio the near vision zone with stabilized power is extended vertically. The wearer enjoys both a sharp vision and extended acuity fields. The near vision is comfortable.
  • Beyond the “High Resolution Vision” promise the product is very easy to explain to the consumer. In terms of benefits Varilux Physio provides “High Resolution Vision” no matter your gaze direction and ensures : Sharpness in Far, Width in intermediate and Comfort in near.
  • Twin Rx™ Technology, it is a revolutionary technology, exclusive to Varilux Physio (and Varilux Ipseo gen 3 coming in 2006) patented by Essilor. “ Twin” means “combining” because it combines/ correlates 2 key technological innovations , first linked to the design calculation and second linked to the process : Key design innovation : Wavefront management system. It calculates the targeted optical lens (targeted optical function) using the wavefront technology Key process innovation : Point by point twinning. It calculates the point by point combination of back and front sides of the lens and manufactures it using Essilor Digital Surfacing  (= advanced freeform) First, let’s discover the Wavefront Management System  .
  • Why the “Wavefront Management System” is an innovation ? For the first time ever the calculation of the optical functions is done locally taking into account the whole beam of light passing through the pupil surface and not only a single ray passing through the centre of pupil (see illustration) In the past , we were using the traditional ray tracing, by successive refraction of the optical rays on the optical surfaces, using Snell ’s laws. The refraction calculation with many rays was made to evaluate the characteristics of the image. Obviously, as the eye scans the whole lens when rotating , it was done for all the points of the lens. Today , with Varilux Physio we go beyond the ray tracing . We analyze the whole beam of light passing through the pupil. The wavefront is calculated for each gaze direction (at least 1000 gaze directions are taken into account ), and based on the pupil diameter (diameter of 6mm is taken into account to ensure the wavefront quality in the most critical case). We process the calculation by the optimization method with the objective to obtain each wavefront as regular/ spherical as possible for each gaze direction. It is a revolutionary approach breaking rules in the current calculation methods of regular PALs.
  • Aberrated wavefront : When a plane or spherical wavefront passes through a lens, the refracted wavefront is distorted (aberrated) Targeted wavefront : the refracted wavefront must be as spherical as possible (aberration free)
  • Why point-by-point twinning is an outstanding innovation? For each gaze direction, the characteristics of the wavefront depend on the local properties of the two lens surfaces . The optical properties of each point on the front surface are perfectly controlled (thanks to Wavefront Management System) and now the geometry of the rear surface has to be determined for each gaze direction to maintain these proprieties. To achieve this, Essilor has developed a specific software which conducts a point-by-point analysis of the combination of the front and rear surfaces (Point by Point Twinning) and determines the properties of the resulting wavefront. The operation is repeated for all points on the rear surface. It is the only way to calculate perfectly the rear surface which, after the twinning with the front surface, leads to the original optical function for each prescription. Bibliography: - GARCIN G., LAFAY C., LE SAUX G., LIPPENS L., MAZUET D. : Application of a deflectometry method to deep aspheric ophthalmic surfaces testing. In Optical Fabrication and Testing (Europto Series Proceedings 1999), Vol. 3739, pp. 291-295
  • P = 0° , 12°, 22° VxPanamic plan add 2.00
  • Personnalisation du design par la maîtrise du front d’onde et par la prise en compte des paramètres individuels: Amétropie, l’écart pupillaire, La hauteur de montage, l’angle pantoscopique, le galbe, la distance verre/œil. Front & Back Varilux Physio f-360° is built up through two sophisticated and perfectly matched optical surfaces. The progressive power is defined on the front side of the lens, while the back side remains virtually flexible due to variable features coming from personalization. The two surfaces of the lens are optimized through wavefront technology.
  • Personnalisation du design par la maîtrise du front d’onde et par la prise en compte des paramètres individuels: Amétropie, l’écart pupillaire, La hauteur de montage, l’angle pantoscopique, le galbe, la distance verre/œil. Front & Back Varilux Physio f-360° is built up through two sophisticated and perfectly matched optical surfaces. The progressive power is defined on the front side of the lens, while the back side remains virtually flexible due to variable features coming from personalization. The two surfaces of the lens are optimized through wavefront technology.
  • INNOVATION: Dual Positioning System™ Thanks to the original combination of both front and back sides, Varilux Physio f-360° can adapt the position of Near Vision area to the wearing conditions. The point-by-point lens calculation allows to control the parameters defined on front side, such as progression length and inset value, and integrates variable parameters on rear surface. This sophisticated calculation creates an interaction between both front and back surfaces and leads to the “spatial flexibility” of Near Vision area. The principle is so called “Dual Positioning System”.
  • Beyond High Resolution Vision Varilux Physio f-360° improves vision by reducing aberrations and customizing the location of the Near Vision area on the lens based on patient’s refraction and individual wearing parameters. Patient benefits from a comfortable transition from far to near and enjoys BETTER and more COMFORTABLE vision. +30% better visual performance* FAR: +30% better Contrast and Sharpness MID: +30% wider fields of Vision NEAR: +30% easier Vision thanks to custom-located Near Vision area R&D simulations in comparison to Varilux Panamic (data on file).
  • Angle in the vertical plane between the optical axis of a spectacle lens and the visual axis of the eye in the primary position, usually taken to be the horizontal. Angle between the spectacle plane and the perpendicular.
  • Thank you Michel & good afternoon everybody.
  • Adjust the frame on the 5D ruler and read the degree of the curvature.
  • Thank you Michel & good afternoon everybody.
  • копие от Varilux physio for attila 2

    1. 2. The six generations of Varilux ® <ul><li>Varilux ® 1 (1959) : the « First » PL </li></ul><ul><li>• Varilux ® 2 (1973) : the « Physiological » PL </li></ul><ul><li>• Varilux Multi-Design ® (1988) : the « Multi-Design » PL </li></ul><ul><li>• Varilux Comfort ® (1993) : the « Natural Vision » PL </li></ul><ul><li>• Varilux Panamic ® (2000) : the « Vision Freedom » PL </li></ul><ul><li>Varilux Physio ® (2006) : the « High Resolution » PL </li></ul>
    2. 3. H igh R esolution V ision  the promise that meets CONSUMERS expectations ! Source : International Market Test, 609 wearers, 56 opticians, 4th April – 15th August 2005 N° 1 Spontaneous Consumers’ expectations on PALs
    3. 4. Varilux Physio ® is designed for H igh R esolution V ision to meet specific physiological needs in each area of vision… Welcome to H igh R esolution V ision 
    4. 5. <ul><li>Far Vision </li></ul><ul><ul><ul><ul><li>Physiology : Coma impacts visual acuity </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Varilux Physio ® : Coma Control  </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Benefit: enhanced visual sharpness </li></ul></ul></ul></ul><ul><li>Intermediate Vision </li></ul><ul><ul><ul><ul><li>Physiology : the eye prefers focusing on vertical lines </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Varilux Physio ® : Axis Control  </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Benefit: enhanced acuity fields </li></ul></ul></ul></ul><ul><li>Near Vision </li></ul><ul><ul><ul><ul><li>Physiology : the eye explores a big area of the lens </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Varilux Physio ® : Power Control  </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Benefit: sharpness and extended acuity fields for greater comfort </li></ul></ul></ul></ul>H igh R esolution V ision  in each area of vision
    5. 6. Wavefront aberration breakdown into elementary terms and their impact on vision Lower orders VISUAL ACUITY Higher orders IMAGE QUALITY TILT DEFOCUS ASTIGMATISM ASTIGMATISM Wavefront aberration
    6. 7. Coma aberration and PALs <ul><li>“ Coma” aberration is generated by local power variation and exists therefore in all PALs </li></ul><ul><li>It gives an asymetric image in the shape of a comet </li></ul><ul><li>Impact of Coma’s is particularly important in FAR VISION , as the pupil diameter in Far Vision is bigger </li></ul><ul><li>Control of Coma guarantees an optimal visual acuity and better contrast in Far Vision. </li></ul>Coma
    7. 8. Aberration impact o n visual perception Defocus Astigmatism No aberration Coma
    8. 9. Importance of Coma control at distance without Coma with Coma
    9. 10. Far Vision The Varilux Physio ® exclusivity: controls even higher order aberrations Coma Control  Enhanced Vision Sharpness
    10. 11. <ul><li>Physiology : In presence of astigmatism the eye naturally focuses on vertical lines </li></ul><ul><li>All PALs generate some astigmatism around the meridian (power variation effect) </li></ul><ul><li>The eye accommodation is low </li></ul><ul><li>PALs should locate the vertical foci close to the retina </li></ul><ul><li>The axis of the residual astigmatism has to be vertical for the Intermediate Vision (+cyl)90° </li></ul>( cyl +) 90 ° Importance of axis control at intermediate
    11. 12. Intermediate Vision Varilux Physio® exclusivity: controls astigmatism and directs the axis vertically Enhanced Acuity Fields Axis Control 
    12. 13. Importance of vertical power control at near
    13. 14. <ul><li>Varilux Physio ® exclusivity : </li></ul><ul><li>extends vertically the zone of stabilized power </li></ul>Near Vision Sharpness and extended acuity fields for greater comfort Power Control 
    14. 15. The Consumer message easy to explain! H igh R esolution V ision  Far Vision: Sharpness Intermediate Vision: Width Near Vision: Comfort
    15. 16. Key Design innovation Wavefront Management System™ Twin Rx TM Technology 2 key innovations Key Process innovation Point by Point Twinning™
    16. 17. Varilux Physio® design innovation analysis of a single ray passing through the pupil centre In the past : Today : Varilux Physio® controls the whole light beam passing through the pupil Wavefront Management System 
    17. 18. Wavefront Management System™ Aberrant wavefront Blurred image
    18. 19. <ul><li>The 2 sides of the lens contribute to the refracted wavefront shape </li></ul>Point by point Twinning  process innovation Combination of the front and back surface on each point Twin Rx Calculation Software Back Side calculated for each prescription output Targeted optical function Front side + Prescription input
    19. 20. Advanced Digital Surfacing  Surfacing Polishing
    20. 21. N°1 in the VARILUX range N°1 in terms of GROWTH Varilux Physio - Two years of success Results end Nov. 2007 Volume +51% Value +53% One New Wearer every 10 seconds  6 Mio Compounded number of wearers ( pairs of lenses) 6 Mio Wearers (est. END 2007)
    21. 22. Varilux Physio f-360 ° Wavefront aberrations Control Varilux Physio ® Eye/lens system control in 5 dimensions Varilux Physio f-360 °
    22. 23. + W.A.V.E. Technology Pantoscopic angle Wrap angle Vertex distance PD Fitting height Far Inter-mediate Near Eye-lens system control in 5 Dimensions … for each gaze direction … for each position of the lens!
    23. 24. Wrap Tilt Vertex Why ? How the « 5D » influence wavefront aberrations Wavefront aberrations analyses for different eye-lens system configurations (different positions of the lens on front of the pupil) <ul><li>The lens positioning in front of the pupil does influence </li></ul><ul><ul><li>the value of the aberrations </li></ul></ul><ul><ul><li>the location of the areas of clear vision </li></ul></ul><ul><li>All distance, intermediate and near zones are impacted </li></ul><ul><li>… but the most important impact is in the near zone </li></ul>
    24. 25. How? Back Complex flexible surface Power variation Front Complex surface Front side Back side Personalization DUAL-design Result Innovation
    25. 26. The name Varilux Physio f-360° « f » = Flexibility (fitting) Varilux Physio foundation Successful optics & technology Excellent sales & perception
    26. 27. The Principle <ul><li>Optical variables : </li></ul><ul><li>Value of the addition </li></ul><ul><li>Near working distance </li></ul>Wavefront aberration control Face Avant Face Arrière <ul><li>Optical variables influencing the surface: </li></ul><ul><li>Ametropia </li></ul><ul><li>The 5D of the lens/eye system </li></ul><ul><ul><li>Pantoscopic angle </li></ul></ul><ul><ul><li>Wrap angle </li></ul></ul><ul><ul><li>Eye / lens distance </li></ul></ul><ul><ul><li>Fitting height (monocular) </li></ul></ul><ul><ul><li>Monocular PDs </li></ul></ul>Personalization <ul><ul><li> </li></ul></ul><ul><ul><li> </li></ul></ul><ul><ul><li> </li></ul></ul><ul><ul><li> </li></ul></ul><ul><ul><li> </li></ul></ul>Innovation Front surface Back surface -5.0° +25.0° 0.0° +25.0° 0.0° 5.0 mm 15.0 mm 25.0 mm 15.0 mm 50.0 mm 22.0 mm Reading distance taken into account in the calculation of the eye-lens system (Physiological data) 400 392 376 351 333 307 286 269 251 250 270 290 310 330 350 370 390 410 1.5 1.75 2.00 2.25 2.5 2.75 3.00 3.25 3.50 Addition Reading distance NV ( c m)
    27. 28. Personalization through “Dual-design Technology “ BACK FRONT Personalization DUAL-design Technology A unique optical function each time <ul><li>Dual design: Two complex surfaces in interaction </li></ul><ul><li>Specific variables managed by wavefront on each </li></ul>! New
    28. 29. The Innovation: DPS Personalized Position of Near Vision Point - The parameters defined on Front side are modified by Back side - The two surfaces “work s together” - Final lens gets a variable Near Vision position depending on wearing conditions Innovation ! New DUAL- Positioning System
    29. 30. In summary DUAL-design 7 patents* (design) 2 patents (Controlling and polishing) HOA management Eye- lens system in 5 dimensions Real time calculation ADS * 2 additional Patents versus regular Varilux Physio 10 PATENTS !! 1 patent (calculation software)
    30. 31. Varilux Physio f-360 In practice <ul><li>Existing SF of Varilux Physio for all materials, Clear and Transitions </li></ul><ul><li>100% back side Digital surfacing, whatever the prescription </li></ul><ul><li>Added values same as for regular Varilux Physio </li></ul><ul><li>Specific Engravings/ Ink markings </li></ul>16 mm Minimum Fitting Height 16mm
    31. 32. High Resolution Vision ™ + unmatched comfort at Near ! Benefits <ul><li>Clearer </li></ul><ul><li>Sharper </li></ul><ul><li>More contrast </li></ul>
    32. 33. From features to the benefits +30% better visual performance* <ul><li>+30% better contrast </li></ul><ul><li>+30% wider fields of vision </li></ul><ul><li>+30% easier vision thanks to personalization </li></ul><ul><li>* versus regular Pals (R&D data versus Varilux Panamic) </li></ul>
    33. 34. Calculation Real time ADS Prescription Calculation time 17’’ to 50’’ ¼ dioptrie 5D 1/1000 dioptria 1/10000 millimeter (0.1 Micron) Measurements 1/10 ( ° ) 1/10 ( mm ) Ordering Delivery Dispensing The realization process DUAL-design
    34. 35. The 5D measurements – Two methods Optician takes measurements « 5D » Rul er Visi O ffice Column Toptable
    35. 36. Measurements with the « 5D » Ruler L R
    36. 37. Measuring the monocular PD  We measure the monocular PD from the center of the bridge on both sides. (Left / Right in mm)
    37. 39. Vertex distance  The distance from the cornea to the demo lens in mm.
    38. 41. Pantoscopic tilt (angle) <ul><li>The angle between the spectacle plane and the perpendicular (vertical). </li></ul>
    39. 43. Wrap angle  The curvature of the frame in degrees.
    40. 45. Monocular PD height  The distance between the middle of pupil and the lower BOXING line of the frame in mm.
    41. 47. Measurements
    42. 48. Make the success happen ! FRANCE : The “Golden Silmo Award” Oct. 2007