Upload
others
View
6
Download
0
Embed Size (px)
Citation preview
9/11/2009
1
Kim Scheidler, ABOC, WLODirector of EducationSutherlin Optical Lab
Impact of Good VisionImpact of Good VisionAverage eyewear lifespan...
25 monthsEyewear will be used for...
over 25 000 miles of drivingover 25,000 miles of drivingviewing 49 or more movies2.2 weddings / graduations26 family events & holidays1 in 3 presbyopes will see a grandchild for the 1st time
The Hi-PO LensThe Hi-PO LensAreas of Performance
DesignSurfaceFiltFilterSubstrate
Hi-PO SV DesignHi-PO SV DesignAsphericity
Reduces Optical Aberrations• less magnification (+ lenses)• less distortion
Cosmetically Flattens• allows for flatter, thinner lenses
Hi-PO SV DesignHi-PO SV DesignSpherical lenses create peripheral distortion because light is unequally refracted across the lens surface...
Spherical lenses create peripheral distortion because light is unequally refracted across the lens surface...
.......multiple points of focusmultiple points of focus
Hi-PO SV DesignHi-PO SV DesignAspheric lenses use multiple curvatures to reduce peripheral defocus and aberration.Aspheric lenses use multiple curvatures to reduce peripheral defocus and aberration.
single focal pointsingle focal point
Hi-PO PAL DesignHi-PO PAL DesignHigh Performance PALs Provide
Natural Reading Posture• greater comfort while reading
Optimized Zone Placementp• ease of adaptation
Binocular Width• wider intermediate vision
Sharper Distance Vision• improved contrast at night
Specialized Design• task/wearer specific zone distribution
Hi-PO PAL DesignHi-PO PAL DesignNatural Reading Posture
Shorter progressions provide more natural reading postures...Shorter progressions provide more natural reading postures...
...a natural reading posture relies primarily on head movements...a natural reading posture relies primarily on head movements
Hi-PO PAL DesignHi-PO PAL DesignOptimized Zone Placement
Distance Rx and ADD power determine optimal zone placement...Distance Rx and ADD power determine optimal zone placement...
MYOPEMYOPEHYPEROPEHYPEROPE
...true multi-design PALs optimize zones for easier adaptation...true multi-design PALs optimize zones for easier adaptation
MYOPEMYOPEHYPEROPEHYPEROPE
9/11/2009
2
Hi-PO PAL DesignHi-PO PAL DesignBinocular Width
The ability to maintain fusion is called "binocularity" The ability to maintain fusion is called "binocularity"
...binocularity determines width- not the spherical area of the channel...binocularity determines width- not the spherical area of the channel
Hi-PO PAL DesignHi-PO PAL DesignBinocular Width
W.A.V.E. Technology™ allows vertical alignment of astigmatism... W.A.V.E. Technology™ allows vertical alignment of astigmatism...
...this increases binocularity- and therefore intermediate width...this increases binocularity- and therefore intermediate width
Hi-PO PAL DesignHi-PO PAL DesignSharper Distance Vision
W.A.V.E. Technology™ controls aberrations in the distance zoneW.A.V.E. Technology™ controls aberrations in the distance zone
...control of aberrations provides clinically proven gains in contrast...control of aberrations provides clinically proven gains in contrast
Hi-PO PAL DesignHi-PO PAL DesignSpecialized Design
Progressions can be designed specifically to a taskProgressions can be designed specifically to a task
STANDARD DISTRIBUTIONFAR DISTRIBUTIONVarilux® SPORT™
NEAR DISTRIBUTIONNikon On-Line™SOLA Access™Shamir Office™
Hi-PO PAL DesignHi-PO PAL DesignSpecialized Design
Progressions can be designed specifically to a frame typeProgressions can be designed specifically to a frame type
SHORT DISTRIBUTIONVarilux® Ellipse™
STANDARD DISTRIBUTION
Hi-PO PAL DesignHi-PO PAL DesignSpecialized Design
Progressions can be designed specifically to an RxProgressions can be designed specifically to an Rx
OPTIMIZED ZONESVarilux 360 OPTIMIZATION™
STANDARD DISTRIBUTION
Hi-PO PAL DesignHi-PO PAL DesignSpecialized Design
Progressions can be designed specifically to a patient characteristicProgressions can be designed specifically to a patient characteristic
HEAD MOVEREYE MOVER STANDARD DISTRIBUTION
Hi-PO DispensingHi-PO DispensingProper fitting is crucial to the performance of ANY design
Proper placement of the opticsProper adjustment of the framep j
An improper fit will compromise the performance of ANY design
Fitting increases in importance with design complexity
9/11/2009
3
Hi-PO Lens SurfacesHi-PO Lens SurfacesHigh Performance Surfaces Provide
Thermally-cured hardcoat• greater durability
Multi-layer Anti-Reflective Stacky• increased night vision• better cosmetics• sharper vision
Hydrophobic & Conductive Layers• easier to clean• greater durability
Hi-PO Lens SurfacesHi-PO Lens SurfacesThermally-cured Hardcoat
The lifespan of a lens is determined by the durability of the surfaceThe lifespan of a lens is determined by the durability of the surface
PrimerPrimer
...high performance surfaces are thermally bonded into the substrate...high performance surfaces are thermally bonded into the substrate
SUB
STR
ATE
Silica-Resin HardcoatSilica-Resin Hardcoat
Hi-PO Lens SurfacesHi-PO Lens SurfacesMulti-Layer AR Stack
Performance surfaces include a multi-layer AR for increased transmissionPerformance surfaces include a multi-layer AR for increased transmission
Multi-Layer AR
...AR also reduces night-time glare and provides superior cosmetics...AR also reduces night-time glare and provides superior cosmetics
SUB
STR
ATE
Multi Layer AR
Hi-PO Lens SurfacesHi-PO Lens SurfacesHydrophobic & Conductive Layers
An AR incorporating a TCO will repel dust and other particlesAn AR incorporating a TCO will repel dust and other particles
Crizal®
...a hydrophobic layer repels water & oil-resulting in fewer cleanings...a hydrophobic layer repels water & oil-resulting in fewer cleanings
SUB
STR
ATE
Hydrophobic Layer
Hi-PO Lens SurfacesHi-PO Lens SurfacesHydrophobic & Conductive Layers
Hydrophobic durability is a function of coating density...Hydrophobic durability is a function of coating density...
Brand XB d Y
...higher densities lead to a longer effective hydrophobic lifespan...higher densities lead to a longer effective hydrophobic lifespan
Brand YBrand Z
Hi-PO Lens SurfacesHi-PO Lens SurfacesHydrophobic & Conductive Layers
Performance hydrophobic layers require an adhesion mechanismPerformance hydrophobic layers require an adhesion mechanism
...durability of the hydrophobic layer is determined by the layer's saturation...durability of the hydrophobic layer is determined by the layer's saturation
SUB
STR
ATE
Pad Control System™
Crizal®
Hi-PO DispensingHi-PO DispensingInclude high-performance surfaces on your lenses
Nearly all patients want: • increased durability• ease of cleaning• better night vision• less noticeable eyewear
60% of all US eyewear consumers choose AR when informed of its benefits
Hi-PO Lens FiltersHi-PO Lens FiltersHigh Performance Filters
UV FiltersPhotochromics
• adjustable filteringj g• UV protection
Polarized• glare reduction• superior contrast• sport & vocational applications
Fixed Tint• neutral & selective filters
9/11/2009
4
Hi-PO Lens FiltersHi-PO Lens FiltersUltraviolet Filters
There are 3 types of UV• UVC < 285nm• UVB 286 – 320nm• UVA 320 – 380nm
ozon
e
UVA 320 380nm
• HEV > 380nmOnly 2 materials do not block UV
• clear CR-39• clear glass
Ultraviolet FiltersOn average, 80% of UV exposure will occur prior to age 20
100% UV protection is a standard-f i
Hi-PO Lens FiltersHi-PO Lens Filters
of-care requirement for all children
polycarbonatebrimmed hats
Hi-PO Lens FiltersHi-PO Lens FiltersPhotochromic lenses provide
Comfortable vision in nearly all lightingComplete protection from UV
Hi-PO Lens FiltersHi-PO Lens FiltersPhotochromic lenses provide
Comfortable vision in nearly all lightingComplete protection from UV
Hi-PO Lens FiltersHi-PO Lens FiltersPolarized Filters provide
reduction of glare• reflections from flat surfaces are reduced
or eliminatedincreased contrast sensitivity
• selective filtering of glaresport & vocational applications
• watersports• driving
Hi-PO Lens FiltersHi-PO Lens FiltersReduction of glare
Non-polarized light contains energy along all axes along its directionNon-polarized light contains energy along all axes along its direction
...a polarizing filter polarizes light along a single axis...a polarizing filter polarizes light along a single axis
Hi-PO Lens FiltersHi-PO Lens FiltersReduction of glare
When light hits a smooth transparent surface, polarization occursWhen light hits a smooth transparent surface, polarization occurs
...water causes horizontal polarization...water causes horizontal polarization
Hi-PO Lens FiltersHi-PO Lens FiltersIncreased contrast sensitivity
Non-polarizing filters attenuate light non-selectively, reducing contrastNon-polarizing filters attenuate light non-selectively, reducing contrast
Hi-PO Lens FiltersHi-PO Lens FiltersIncreased contrast sensitivity
Polarizing filters preserve contrast by selectively filtering glarePolarizing filters preserve contrast by selectively filtering glare
9/11/2009
5
Hi-PO Lens FiltersHi-PO Lens FiltersPolarized applications - driving
Polarized lenses increase contrast perception & decrease reaction timesPolarized lenses increase contrast perception & decrease reaction times
Hi-PO Lens FiltersHi-PO Lens FiltersPolarized applications - driving
Polarized lenses increase contrast perception & decrease reaction timesPolarized lenses increase contrast perception & decrease reaction times
20/15
20/10
20/100
20/80
20/63
20/50
20/40
20/32
20/25
20/20
20/15
1.0 10.0 100.0
Contrast
Snel
len
VA
Tinted AR
Polarized AR
Hi-PO Lens FiltersHi-PO Lens FiltersPolarized applications - driving
Polarized lenses increase contrast perception & decrease reaction timesPolarized lenses increase contrast perception & decrease reaction times
2000
ms)
0
800
1000
1200
1400
1600
1800
1.0 10.0 100.0Contrast
reac
tion
time
(m
Tinted AR
Polarized AR
Hi-PO Lens FiltersHi-PO Lens FiltersNeutral & Selective Filters
Neutral (grey) filters attenuate light evenly across the spectrum- selective filters may improve contrast
Neutral (grey) filters attenuate light evenly across the spectrum- selective filters may improve contrast
Objective of FiltersFilter out harmful / distracting light
• UV and/or IR• reflected glare
Transmit useful light
Hi-PO DispensingHi-PO Dispensing
Transmit useful light• preserve contrast• manipulate color perception
– preserve color perception (neutral grey)– alter color perception (all other colors)
ALL filters (except UV) reduce light transmission
(including "contrast enhancing" night driving lenses)
Hi-PO DispensingHi-PO Dispensing
Hi-PO SubstratesHi-PO SubstratesHigh Performance Substrates Provide
Safety• impact resistance• UV protection
High Performance Substrates ProvideSafety
• impact resistance• UV protection
Structural Durability• high tensile strength (drill mounts)
Superior Cosmetics• thin profile• optical clarity
Superior Comfort• light weight
Structural Durability• high tensile strength (drill mounts)
Superior Cosmetics• thin profile• optical clarity
Superior Comfort• light weight
Hi-PO SubstratesHi-PO SubstratesSafety
Polycarbonate is the ONLY material that retains a consistent level of impact resistance in ALL forms
SafetyPolycarbonate is the ONLY material that retains a consistent level of impact resistance in ALL forms
UNCOATED HC SURFACE AR SURFACE
Polycarbonate resists extreme impact levels with any surfacePolycarbonate resists extreme impact levels with any surface
9/11/2009
6
Hi-PO SubstratesHi-PO SubstratesSafety
ALL materials must pass FDA drop-ball (by law)However, hardcoat & AR surfaces will
SafetyALL materials must pass FDA drop-ball (by law)However, hardcoat & AR surfaces will
UNCOATED HC SURFACE AR SURFACE
greatly reduce impact resistancePolycarbonate is the only high-performance impact resistant lens option for children
greatly reduce impact resistancePolycarbonate is the only high-performance impact resistant lens option for children
Hi-PO SubstratesHi-PO SubstratesStructural Durability
Tensile strength is a measure of a material's ability to resist "tearing"
• this equates into resistance to splitting in drill mounts
Structural DurabilityTensile strength is a measure of a material's ability to resist "tearing"
• this equates into resistance to splitting in drill mountsto splitting in drill mounts
Tensile strength by material• 80.5 kg/f = 1.60 (MR8)• 67.3 kg/f = 1.67 (MR7)• 61.2 kg/f = Trivex• 52.9 kg/f = 1.70• 44.9 kg/f = polycarbonate• 15.6 kg/f = CR-39
to splitting in drill mountsTensile strength by material
• 80.5 kg/f = 1.60 (MR8)• 67.3 kg/f = 1.67 (MR7)• 61.2 kg/f = Trivex• 52.9 kg/f = 1.70• 44.9 kg/f = polycarbonate• 15.6 kg/f = CR-39
Hi-PO SubstratesHi-PO SubstratesSuperior Cosmetics
Hi-index lenses reduce thicknessSuperior Cosmetics
Hi-index lenses reduce thickness
1.501.601.74
Hi-PO SubstratesHi-PO SubstratesSuperior Cosmetics
Optical clarity is a function of:• transmittance
– perception of white target• color rendering
Superior CosmeticsOptical clarity is a function of:
• transmittance– perception of white target
• color rendering• color rendering– perception of chromatic target
• contrast– ability to perceive contrast near/far
Abbe value is not a major function of clarity• The eye has approximately 1.00D of linear chromatic
aberration (which does not impair vision)– (-10.00 poly lens viewed at 30º produces <0.50D linear
chromatic aberration)
• color rendering– perception of chromatic target
• contrast– ability to perceive contrast near/far
Abbe value is not a major function of clarity• The eye has approximately 1.00D of linear chromatic
aberration (which does not impair vision)– (-10.00 poly lens viewed at 30º produces <0.50D linear
chromatic aberration)
Recommending SubstratesPolycarbonate for Safety
• children• monocular patients• most safety applications
Hi-PO DispensingHi-PO Dispensing
most safety applicationsTensile Strength for Drill Mounts
• 1.60, 1.67• Polycarbonate• Trivex
Higher Index for ThinnessLow Specific Gravity for Lightness
• Polycarbonate• Trivex
SummaryDesign is Fine- with a Fit Devine
• binocularity = width• reduced aberration = contrast sensitivity • customization = potential for > performance
Hi-PO DispensingHi-PO Dispensing
customization potential for performanceIf It Ain't Thermal, It Ain't Durable
• thermal cure = permanent adhesion• conductive layer = anti-static• dissymmetric = hydrophobic
Don't Squint Those Eyes- Polarize!Keep Your Sight With Something Light
• polycarbonate for safety• high index- its great for drill mounts too
Thank You!Pete Hanlin, ABOM, LDO
Thank You!Pete Hanlin, ABOM, LDO
Thank You!Thank You!