Using Orthotool Software
|
|
- Madeleine Scott
- 5 years ago
- Views:
Transcription
1 Using Orthotool Software
2 OrthoTool (2008) Original Design with 5 Curves. You can just use the new version 2013 Toric RC, AC & PC only with OT 2008 so far Hyperopic ortho-k GP lens design Aspheric multifocal design For empirical designs
3 Select Lens Design Toric FC/AC/PC Type in 1.0, 1.25 etc 1. Fill in patient s name & reference 2. Fill in Rx: K readings, refraction, e value (if available) 3. Choose lens design (for simplicity, use CC Chow mm or smaller & CC Chow 2 11mm & above)--- go to preference page for that 4. Clear right/displace right, clear left/displace left 5. Go to Preference page
4
5 Click the button and you ll have different choices Most commonly used: Chow 1, Chow 2, Aspheric multifocal
6 Choose the DESIGN you want (CC Chow 1 ) If you get lost, click Top of Form at right hand corner, and it will lead you to the preference page again * Use Asphere for hyperopia ortho-k & multifocal
7 Understanding Control Clearance Philosophy RED LINE = Pre determined values
8 (1) (2) (1) This is pre determined. Only adjust Apical clearance from 0.05 to 0.08 (5 to 8 microns) Use 0.09 for higher targeting (2) Choose your desired diameter/width a. diameter largest possible/>90% of HVID b. RC width: low target smaller--- plano to -3D width of 0.4mm (this is the general rule, you can adjust accordingly depending on the results) -3.5 to 5D width 0.5mm -5 to -7D width 0.7mm, above use 8.0mm You need more room for high target, narrower the width, higher the force
9 You can make your own choice. 2 nd & 3 rd curve=ac1 & AC2 Adjust AC1 & AC2 to come up with desired OZ diameter OZ as small as possible for myopia control purpose Go to Preference Page again:
10 Adjust E value of cornea to match AC from trial lens. Adjust the e value number at column 8, (2 nd curve=ac1) Click here to choose lens designs. For the time being, just use CC1 or CC2 and aspheric 75/9.8 for multifocal & hyperopia designs Press steeper or flatter for desired targeting power
11 Most of time the width should be 0.6 (mideum range). For extreme high targeting, use If radius of Reverse Curve (RC) gets too steep (e.g. below 6.0mm (56.25), it s difficult for the lab to manufacture. Widen RC width. For low powers, you can use width of 0.5mm or even 0.4 mm
12 Choose the proper AC curves If you have a set of trial lenses (10.8 mm from Dr. Chow s recommendation), based on the corneal e value, you can choose one that is close enough to find out if the fit is acceptable (360 degree rather heavy touch still with ample movement). Use your two fingers as instructed at the lecture instead of slit-lamp. The new set of trial lens with 12 lenses is sufficient for targeting power from plano to -8D (see next page) If you don t have trial lens, just use flat K to start, or go 1/2D flatter Since most of the e values are not reliable, once I found out the proper ACs from the trial lens, I usually adjust the e value to match the number. Now there is only one trial set (12 lenses) -4D with RC width of 0.6mm If you want to use the same trial set for higher targeting (>-8D), change your Preference Page to 0.7mm or even 0.8mm Later on, you can ask me to design an aspheric trial set
13
14 Treatment Zone (OZ) & Pupil Size Determine the pupil diameter in room illumination Go as small as possible for myopia control purpose. The smaller the treatment zone, the better the myopia control effect The most commonly used BOZD=5.4 mm
15 Toric FC,AC & PC For high astigmatism (limbal to limbal), displaced corneal apex, extremely low shape factor (low corneal e value), extremely flat corneas, or an extremely large HVID, use toric design Choose from 1.0, 1.25, 1.50 or higher if necessary NOTE: if you are using the new upgrade (Chow 5.1 & 5.2), toric design may not be necessary. Just find a trial lens with AC showing good alignment (360 degree dark circle while the lens is stable). Ignore the central bearing in the beginning and adjust RC width/tlt later for optimum result. With the use of apsheric 6-curve design, toric curve(s) are not necessary
16 Lens Diameter First determine the corneal HVID Choose diameter approx 0.4 mm smaller than HVID to avoid tight fit (e.g. HVID 11.4mm, use 11.0mm lens diameter, HVID 11.0mm use 10.6mm) If you have to use a tighter AC, reduce OAD by 0.2mm and use PC width of 0.3mm and apply a steeper PC radius (don t usually go below 10D) Total diameter of lens is dependent on lens fit. Normally you want to cover as much corneal surface as possible in order to have enough room for all curves Or just go to largest possible. Use slip-lamp to determine the final size. As long as the lens is still within the HVID Extreme large lens may cause tight fit. Based on the Controlled Clearance theory of OrthoTool, balance and sufficient TLT under lens is vital
17 A. Central Optical Zone B. Fitting Zone C. Facilitation/Relieve/Enh ancement Zone D. Alignment Zone(S) E. Periphery Zone Double Reverse Curves: Most powerful for successful Ortho-K practice Edward Chow, OD
18 OrthoTool Tear Film Analysis Chart Controlled Clearance Diagram Shows the Exact Amount of Tear Volume under Lens Front Optical Zone, Anterior Bowl The tear film analysis chart shows us the voided area (space) between the lens and the corneal model If the model is off, then the entire lens and tear film is off
19 OrthoTool Tear Film Analysis Chart (Cross-Section of Lens) Total Diameter=10.6 mm, BOZ Diameter=5.40 mm RZ=1.60 mm (0.8) PC=0.6 mm (0.3) BOZ=5.40 mm AC=3.0 mm (1.5) 5.40 mm 10.6 mm There is a designated area/volume in each zone for different target and condition
20 Force Concept Represents True Tear Volume & Force Applied at Various Points of Interest 5 Curves 6+ Curves Surface Tension Surface Tension Force Negative Force: Pull Positive Force: Push Small Capillary Force
21 Forces Concept (Depending on corneal rigidity, sometimes works well) Imbalanced Excessive Fluid Force Balanced Fluid Force
22 Forces Concept Low Target At time, harder to mold low Rx due to insufficient force applied Increased Force Showing Balanced Force Tear film distributed unequally, pressure is created Depth of tear film in each zone is critical
23 Facilitation/Relieve/Enhancement Curve Functions: To create tear film equilibrium To create extra pressure for the steepening of the midperipheral corneal tissue (sucking tissues from AC, the capillary force) To align/bridge FC1 & AC1 (both may be too tight/or force too strong) Form a smooth transition between these 2 curves, especially if aspheric BOZ is applied Help to re-fit old or new patients currently on reverse geometry or GP lenses who are not responding to treatment Difficult corneas that are not responding to treatment (enough targeting but not responding) Enhancement for higher targeting When all other designs failed Enhancement of fit so patients can stay out of lenses for a couple of days
24 Designing Your Own Trial Lenses The first curve(s) to be determined is the Alignment Curve(s) Set the targeting power Use the preference sheet to set the desired parameters tear clearance & width Change the corneal e value to come up with the desired Alignment Curve(s): Desired AC s: 8.54, 8.44, 8.33, 8.23, 8.13, 8.04, 7.94, 7.84, 7.75, 7.67, 7.58 & 7.50 The software will calculate for you the correct FC (RC)
25 New Software Orthotool 2013
26 Design Format/Preference Void area (value 0.00) Pre-determined, DO NOT CHANGE Standard values
27 Comparing Original Software & Orthotool 2013 Aspheric BOZ Go extra steeper for RC, use with care!
28 Spherical vs Aspheric Design Tear Volume Tear Volume
29 Tear Film Diagram Reverse Curve is split into TWO (FC 2 is flatter than FC 1) 29 Tight Fit FC2 AC starts here Edward Chow, OD
30 Desired TLT Diagram (Chow 5.1) Relieve Curve
31 If you find the lens is still too tight, change FC2 TLT Make sure they match 1. Maintain 0.3 all the time, change TLT (1a) from 0.05 to 0.07 (0.06 mostly used) 2. Apex TLT from to 0.008mm depending on target (5 to 8 microns)
32 Simple Approach to start the program Standards: pre-determined A. Base Curve (usually target extra: 2.0D or more) B. Diameter C. Centre thickness: 0.24mm D. Edge thickness: 0.14mm E. Anterior Bowl (front optical zone diameter): mm. Use 7.0 mm to tighten fit. Control lenticular flange thickness
33 Variables: change according to different situations A. E values: best to find out with trial lenses of known AC B. RC widths: depending on amount of targeting, usually with wider width for higher targeting (e.g. 0.4, 0.5, 0.7, 0.8mm) -3D or less=0.4 mm, to -5D=5.0 mm, to -7D=6.0 mm, >-7.50 D=7.0 or 8.0 mm, etc. Most common use is 0.5 mm. Adjust accordingly with FC2 if encountered tight fit. For more aggressive results, use a narrower width. Usually use a smaller width for more effective result C. AC radius: based on the e value & trial fit. Software will calculate the best RC radius D. BOZD: determine the desired diameter and adjust ACs & PC width to accommodate
34 Design Format/Preference 1a curve width always set at 0.3, 1a TLT set at 0.05 and can go up & down depending on the fit. Change of this TLT also make changes for AC1 (which is adjacent to the 1a curve. RC TLT can go up & down to adjust SAG
35 Type your name & address Chow 5.1 & 5.2 with additional curve (1a curve & width 1. Chow 1 & 2 are the old version 2. Chow 5.1 & 5.2 are new version. 3. Use aspheric trial set for aspheric design in both version
36 Using spherical trial sets (if using aspheric trial set, go directly to Chow 5.1 & 2 design) 1. Once the Chow 2 are set, it can be used as a design format/model to be adjusted by Chow For some corneal shape, you may want to fit a tighter AC. You have to adjust 1a TLT & width to accommodate the changes
37 Now matched by increasing RC TLT to If you want to have an extra force, set at 0.02, and you can go less
38 Variables: 1. OZ: adjust diameter/rc/ac/pc width to come up with desired OZ diameter 2. RC: adjust width with amount of targeting (e.g. <-4D use 0.5mm, -4.5D to -6D use 0.6mm, >-6D to -8D use 0.7mm, etc.) 3. BC eccentricity=boz asphericity: small OZD you can use higher e value (5mm=1.4, 1.5 or more), larger OZD use lower e values (5.4=1.4, 5.6mm=1.3, 5.8mm=1.2, 6mm=1.0) 4. Target power: minimum 2D and you can go as high as 3.5D or more. Over-refract to determine how much more to target 5. Most used value for 1a width is 0.3mm (serves the purpose of sucking more tissue from AC1 & balance off FC1 & AC1) 6. These 2 values (AC1 & 2) can be interchanged 7. Edge curve width=pc: most of time at 0.3 mm 8. Edge clearance (4 th curve radius): use the value as close to the TLT provided at Design Page (just round off to the highest value and not lower than 10D. Usually 11.0 or up to 12.0
39 1&2 OrthoTool Tear Film Analysis Chart Controlled Clearance (6-Curves Design) Diagram Showing Tear Layer Thickness (TLT) at Various Sites 9 Front OZ Diameter (AB) Lens should be constructed in a way that is close to the desired end result, but with a small additional flattening beyond the exact result desired (the new Jessen Rule) 1. Apex with TLT from 5 microns to >8 microns 2. Increase in TLT (RZ) with application of aspheric Back Optical Zone
40 Spherical VS Aspherical Base Curve Flatten Faster
41 Aspheric BOZ As Function Of Treatment Zone BC Radius Flatten Faster Towards Edge Of BOZ OZD=5.2 mm OZD=6.0 mm
42 OrthoTool Tear Film Analysis Chart Total Diameter=10.6 mm, BOZ Diameter=5.40 mm 3 & 4 RZ=1.60 mm 0.5/0.3 mm PC=0.6 mm (0.3) BOZ=5.40 mm 10.6 mm 0.3 mm AC=3.0 mm ( mm) 5.4 mm Most powerful area in forces. Success depends on the force in this area for myopia control. Changes in forces determine the position of lens location (trouble shooting for displacement such as lateral, low and high riding)
43 Comparing RC1 & RC2 Different between 0.2 vs 0.3 mm 6.21/7.23 vs 6.21/7.50
44 OrthoTool Tear Film Analysis Chart Total Diameter=10.6 mm, BOZ Diameter=5.40 mm 5,6 &7 AZ=3.0 mm PC=0.6 mm (0.3) (Average 30% of total diameter) ( mm) 10.6 mm Requires minimum TLT in this area (for centration) AZ=1.50 mm
45 Alignment Curves st curve(s) to be determined Provides lens movement & assist centration Provides surface tension force that will help to build up tissue at the Reverse Zone
46 Hyperopic Ortho-K The forces are OPPOSITE to myopic OK Myopic: compression centrally, tension peripherally. Hyperopic: Tension centrally, compression peripherally.
47 Topographical changes driven by mid-peripheral compression At 5.0 mm
48
49 Plano = 20 microns of Apical Clearance = = approx. 30 microns = = approx. 40 microns = = approx. 50 microns = = approx. 60 microns
50 Eccentricity Required to Accomplish the Desired Apical Clearance D correction use an eccentricity of D correction use an eccentricity of D correction use an eccentricity of D correction use an eccentricity of D. correction eccentricity of microns D. correction eccentricity of microns
51 +2.00 D. Correction D. Correction
52 +2.00 D. Correction D. Correction
53 Hyperopia Orthokeratology Tension & Compression Tension Compression
54 RC is going to be a radius between 7.20 to 7.50 (width 0.5mm) Radius of RC needs to be adjusted flatter and flatter until the first radius that lifts the lens in the periphery AC approximately 1.0D flatter than flattest K (width 0.8mm) PC should provide 110 to 120 microns of clearance
55
56 Reminder: 1. BOZ should be as small as possible 2. RC width (Chow 5.1): from 0.4 to 0.8mm. Rarely goes to 1.0 mm unless it s for very high targeting (>-10.0 D) 3. RC radius (TLT): starting from 0.02 or 20 microns (and lower to to increase force at RC. Or increase to or higher for more relieve) 4. 1a (relieve/enhancement curve, Chow 5.1) width: usually 0.3mm. If necessary, you can go to 0.4mm (for extreme tight AC, e.g. toric cornea, or lateral decentration) 5. 1a clearance (TLT): usually sets at or 6 microns. Rarely you have to go to 0.08 or above. Go to for reduced TLT or to increase TLT 6. In some cases that you have to fit a tighter AC, reduce OAD by 0.2mm & change PC width to 0.3mm & steeper PC radius
57 8. Learning to read the topographer maps: a. insufficient central bearing: flatten RC radius b. insufficient RED zone: extra targeting, increase BOZ asphericity (adjust BOZ diameter to a smaller value), reduce RC zone width (smaller width creating more force) or adjust all features. c. AC width: please understand that the total width of AC comprises a small percentage of the OAD (normally <2mm, usually 1.5mm). You can go as steep as possible especially with the relieve curve bridging FC1 & AC1 d. Displacement (lateral): only need to adjust the 1a curve with AC the same e. Superior displacement: AC too loose or not enough force at RC f. Inferior displacement: AC too tight. Loosen AC & Steepen RC
58 Preferred Labs In U.S. and Canada (This is important since the lens designs are complicate. I have tested out the quality of lenses manufactured over a period of 3 years. OrthoTool users have a lower fee per lens than normal fee in the market) 1. GP Specials (Att. Mark: ) 2. Precision Optics (Vancouver) Att. Randy They provide lower fee per lens compared to other labs with one free exchange within 120 days.
Spherical VS Aspheric. BC Flatten Faster creating extra force at RZ
Spherical VS Aspheric BC Flatten Faster creating extra force at RZ Aspheric BOZ As Function Of Treatment Zone (Back Optical Zone) BC Radius Flatten Faster Towards Edge Of BOZ OZD=5.2 mm OZD=6.0 mm Fitting/Reverse
More informationTrouble Shooting Guide for Ortho-K lenses
Trouble Shooting Guide for Ortho-K lenses The basic design of the third generation e Lens for Orthokeratology 1. Optic Zone (Base curve, Compression zone, BC) width 5.6 to 6.4mm 2. Fitting curve (second
More informationIntroduces The OK -EX -Total Tear Layer Control- Features. What is the OK-EX? Multi-Axis Toric Option.
Features Optimum Control and Results for High Myopia Hyperbolic Treatment Zones for Maximum Flattening Dual Aspheric Reverse and Alignment Zones for Improved Lens Centering Topographical / Empirical /
More informationSiesta 100. Training + Certification Guide. Bringing eye care professionals the finest quality, custom GP lens designs.
o r t h o k er a t o l o g y Training + Certification Guide Bringing eye care professionals the finest quality, custom GP lens designs. 800-792-1095 tfoptics.com Training and Certification Corneal Shape
More informationIntroducing an enlightened scleral lens designed specifically for regular corneas.
ZEN TM RC scleral lenses Introducing an enlightened scleral lens designed specifically for regular corneas. NEW ZEN RC ALL THE BENEFITS OF ZENLENS SCLERAL LENSES IN A SMALLER DIAMETER. The Zen RC lens
More informationFITTING GUIDE PRACTITIONER S ROSE K2 KC ROSE K2 NC ROSE K2 IC ROSE K2 PG NIPPLE CONE IRREGULAR CORNEA POST GRAFT
Keratoconus Nipple Cone Irregular Cornea Post Graft PRACTITIONER S FITTING GUIDE NIPPLE CONE IRREGULAR CORNEA POST GRAFT Four lens designs... One simple systematic approach to fitting Featuring Easy-to-fit
More informationFitting Manual Use with kerasofttraining.com
Fitting Manual Use with Fitting Manual: Contents This fitting manual is best used in conjunction with KeraSoft IC online training. To register, please visit www. 01 Kerasoft IC Design - Outlines the KeraSoft
More informationFITTING GUIDE. Duette Hybrid Contact Lenses Duette Progressive Hybrid Contact Lenses - Center Distance - Center Near
FITTING GUIDE Duette Hybrid Contact Lenses Duette Progressive Hybrid Contact Lenses - Center Distance - Center Near P R O G R E S S I V E The unique advanced-technology Duette hybrid contact lenses are
More informationIrregular Cornea. ROSE K2 Soft TM. Practitioner s Fitting Guide
Irregular Cornea ROSE K2 Soft TM Practitioner s Fitting Guide ROSE K2 Soft Applications Design ROSE K2 Soft is a daily wear soft lens for irregular corneas. ROSE K2 Soft is a 3 month replacement lens when
More informationFITTING GUIDE. Applications. Design Options THE CRISP, CLEAR VISUAL ACUITY OF A GP LENS MEETS THE HYDRATING COMFORT OF A SOFT LENS
THE CRISP, CLEAR VISUAL ACUITY OF A GP LENS MEETS THE HYDRATING COMFORT OF A SOFT LENS FITTING GUIDE Applications Design Options NORMAL PROLATE CORNEAS PRESBYOPIA ASTIGMATISM EMERGENT OR FRUSTE KERATOCONUS
More informationFITTING GUIDE. Applications. Design Options OPTIMUM OXYGENATION FOR LONG-TERM CORNEAL HEALTH
OPTIMUM OXYGENATION FOR LONG-TERM CORNEAL HEALTH FITTING GUIDE Applications Design Options NORMAL PROLATE CORNEAS PRESBYOPIA ASTIGMATISM EMERGENT OR FRUSTE KERATOCONUS SOFT CONTACT LENS INTOLERANT SMALL
More informationIntroducing a lens that can take your scleral fitting to a higher plane.
Introducing a lens that can take your scleral fitting to a higher plane. Alden Optical s newest specialty lens has arrived: Zenlens, a mini-scleral, fully vaulting lens co-designed with Jason Jedlicka,
More informationFitting Manual Use with
Fitting Manual Use with The KeraSoft IC Lens for and Other Irregular Corneas The KeraSoft IC is a front surface asphere or aspheric toric prism ballasted lens with balanced overall thickness and wavefront
More informationKeratoconus contact lenses
Indic ations All Keratoconus. Daily wear. Recommended replacement: < 2 years. Design Aberration control aspheric optics providing outstanding acuity, reduced flare and glare. Unique design that changes
More informationWave Front Topography. ReSeeVit Evolution Topography Module for Modi Topographer
Wave Front Topography ReSeeVit Evolution Topography Module for Modi Topographer Introduction The aberrations in the central optical zone have a greater effect than those closer to the edge. From an optical
More informationfamily of lens designs fitting guide ICD is Exclusively Manufactured In
TM family of lens designs fitting guide ICD is Exclusively Manufactured In paragon 1 Select Initial Diagnostic Lens: Identify the Corneal Condition Normal Depth Eyes Normal Shapes Median Flat KReading
More informationDESIGNED FOR SUCCESS...GUARANTEED TO FIT
This is a supplement to the main Flexlens fitting guide and does not contain all the warnings, precautions and directions for use found in the main fitting guide. Please refer to the main fitting guide
More informationG.P. MULTIFOCAL LENSES: A FITTING WORKSHOP
G.P. MULTIFOCAL LENSES: A FITTING WORKSHOP Susan J. Gromacki, OD, MS, FAAO, FSLS Daniel G. Fuller, OD, FAAO, FSLS Cornea, Contact Lenses and Refractive Technologies Section The American Academy of Optometry
More informationThe soft approach to RGPs
CET CONTINUING EDUCATION & TRAINING Sponsored by 1 CET POINT The soft approach to RGPs Part 3: don t let torics put you in a spin 46 Mark Tomlinson BSc (Hons), MCOptom, FBDO (Hons) Most practitioners acknowledge
More informationULTRA-THIN CUSTOM CONTACT LENS FOR KERATOCONUS AND IRREGULAR CORNEAS
ULTRA-THIN CUSTOM CONTACT LENS FOR KERATOCONUS AND IRREGULAR CORNEAS FITTING SET PARAMETERS The Standard Fitting Set is available with 8 x 14.50mm diameter lenses comprising: 6 x STD periphery Base Curve
More informationCorneal Mapping over the Contact Lens. Challenge: Getting the Most out of Soft Contact Lens Multifocals
Contact Lens Management of the Challenging Patient Disclosures: Alcon Bausch + Lomb SpecialEyes Valley Contax Vistakon Contact Lens Challenges Matthew J. Lampa, OD, FAAO lampa@pacificu.edu Challenge: Getting
More informationAdvanced Fitting Guide
Advanced Fitting Guide Keratoconus Pellucid Marginal Corneal Degeneration Corneal Ectasia Corneal Graft Irregular Cornea Post Refractive Surgery Astigmatism Chronic Dry Eye Sports 1 Innovators of Software,
More informationParagon CRT Dual Axis Quick Reference Guide
Paragon CRT Dual Axis Quick Reference Guide DUAL CRT AXIS PARAGON CRT DUAL AXIS OPTIONS TO COMPENSATE FOR PERIPHERAL CORNEAL ELEVATION DIFFERENCES Most eyes with corneal astigmatism manifest a significant
More informationULTRA-THIN SPECIALIST CONTACT LENS FOR KERATOCONUS AND IRREGULAR CORNEAS
ULTRA-THIN SPECIALIST CONTACT LENS FOR KERATOCONUS AND IRREGULAR CORNEAS DIAMETER & PERIPHERY GUIDE KeraSoft Thin s increased flexibility improves drapage over the peripheral cornea. This reduces the need
More informationAn Interesting Use of Bausch and Lomb s KeraSoft IC Lens
An Interesting Use of Bausch and Lomb s KeraSoft IC Lens Nate Schlotthauer, OD 2012 Michigan College of Optometry Cornea and Contact Lens Resident Introduction: The KeraSoft IC lens, introduced to the
More informationCorrecting Astigmatism with Contact Lenses John M. Laurent, OD, PhD William J. Benjamin, OD, PhD
Correcting Astigmatism with Contact Lenses John M. Laurent, OD, PhD William J. Benjamin, OD, PhD Photo: Annie Chang, OD, and Dawn Lam, OD. Before we start... Accurate refraction critical in most cases
More informationMultifocal Contact Lenses. Steps for Success. Disclosures. Patient Selection. Presbyopic Soft Contact Lenses: Options for Success
Disclosures Outside Consultant Presbyopic Soft Contact Lenses: Options for Success Precilens Coopervision Research Funds Bausch and Lomb Brooke Messer, OD, FAAO, FSLS Cornea and Contact Lens Institute
More informationA Study of the Effectiveness of CK One-Step Lenses for Correcting Myopia
13 A Study of the Effectiveness of CK One-Step Lenses for Correcting Myopia Ann M. Foss Faculty Sponsor: Margaret A. Maher, Departments of Biology/Microbiology Clinical Sponsor: Richard L. Foss, O.D. ABSTRACT
More informationShowcasing the Innovative Lens Design Portfolio that will Maximize Your Patient s Vision. Carri Russell, FCLSA, COT
Showcasing the Innovative Lens Design Portfolio that will Maximize Your Patient s Vision Carri Russell, FCLSA, COT Family business that was established in 1976 Headquarters in Dallas/Ft. Worth, Texas Long
More informationWhat s a Corneal GP Lens?
Slide 1 What s a Corneal GP Lens? Richard Dorer NCLEC Blanchard Contact Lens Inc. 800-367-4009 x 131 richarddorer@gmail.com www.blanchardlab.com Slide 2 Endorsements I am a paid representative and consultant
More informationClearKone Restoring vision. Changing lives.
ClearKone Restoring vision. Changing lives. For additional information on fitting ClearKone, please visit www.fitsynergeyes.com to view fitting videos, case studies, NaFL pictures and more. FITTING GUIDE
More informationPROFESSIONAL FITTING GUIDE
PROFESSIONAL FITTING GUIDE FluoroPerm 92 (paflufocon A) Rigid Gas Permeable Contact Lenses for Daily Wear with Tangible TM Hydra-PEG FluoroPerm 60 (paflufocon B) Rigid Gas Permeable Contact Lenses for
More informationTORIC AND MULTIFOCAL GP AND SCL PRESCRIBING Edward S. Bennett OD, MSEd, FAAO
1 2 3 4 5 6 1 TORIC AND MULTIFOCAL GP AND SCL PRESCRIBING Edward S. Bennett OD, MSEd, FAAO l Dr. Bennett is a consultant to the Contact Lens Manufacturers Association SOFT TORICS: Good Candidates l Astigmatic
More informationSOFT (HYDROPHILIC) CONTACT LENSES DAILY WEAR FOR PLANNED REPLACEMENT OR DAILY DISPOSABLE. PRACTITIONER FITTING GUIDE July 2009
BIOMEDICS 55 (ocufilcon D) BIOMEDICS 55 Toric (ocufilcon D) BIOMEDICS 55 Multifocal (ocufilcon D) SOFT (HYDROPHILIC) CONTACT LENSES DAILY WEAR FOR PLANNED REPLACEMENT OR DAILY DISPOSABLE PRACTITIONER FITTING
More informationSoft CL Multifocals Design and Fitting. Soft Multifocal Lens Designs. Issues Surrounding Multifocals. Blur Interpretation. Simultaneous Vision Designs
Soft CL Multifocals Design and Fitting Mark Andre, FAAO Associate Professor of Optometry Pacific University Mark Andre, FAAO is affiliated with CooperVision, as a consultant. Issues Surrounding Multifocals
More informationHARD TORIC CONTACT LENSES ASTIGMATISM DEFINITION AND OPTIC BASIS
Mario Giovanzana Milano 20.06.01 HARD TORIC CONTACT LENSES ASTIGMATISM DEFINITION AND OPTIC BASIS An astigmatism, according to Whevell (1817) has been defined as astigmatism or astigmatic ametropia; the
More informationCONTACT LENSES FOR KERATOCONUS & ALL IRREGULAR CORNEAS
CONTACT LENSES FO KEATOCONUS & ALL IEGULA CONEAS Technical Fitting Guide HYDOGEL www.kerasoft.co.uk KeraSoft IC Technical Fitting Guide Introduction The KeraSoft IC is a soft contact lens designed to fit
More informationNormalEyes Guidelines For Successful Fitting RIGID GAS PERMEABLE SCLERAL CONTACT LENSES. Manufactured in Paragon HDS 1OO (paflufocon D)
NormalEyes 15.5 Guidelines For Successful Fitting RIGID GAS PERMEABLE SCLERAL CONTACT LENSES Manufactured in Paragon HDS 1OO (paflufocon D) FOR DAILY WEAR PARAGON VISION SCIENCES Just watch us 2012 Paragon
More informationPART 3: LENS FORM AND ANALYSIS PRACTICE TEST
PART 3: LENS FORM AND ANALYSIS PRACTICE TEST 1. 2. To determine the power of a thin lens in air, it is necessary to consider: a. front curve and index of refraction b. back curve and index of refraction
More informationChapter 3: LENS FORM Sphere
Chapter 3: LENS FORM Sphere It can be helpful to think of very basic lens forms in terms of prisms. Recall, as light passes through a prism it is refracted toward the prism base. Minus lenses therefore
More informationFOR FREQUENT REPLACEMENT SOFT HYDROPHILIC CONTACT LENSES PRACTITIONER FITTING GUIDE
AVAIRA (enfilcon A) AVAIRA Toric (enfilcon A) & AVAIRA Multifocal (enfilcon A) FOR FREQUENT REPLACEMENT SOFT HYDROPHILIC CONTACT LENSES PRACTITIONER FITTING GUIDE Part Number: PFG01012 Page 1 of 13 Table
More informationLens Types. Single Vision. Lined Bi-Focal. Lined tri-focals
Lenses It can be helpful to think of very basic lens forms in terms of prisms. As light passes through a prism it is refracted toward the prism base. Minus lenses therefore resemble two prisms apex to
More informationSlide 1. Slide 2. Slide 3. Richard Dorer NCLE
Slide 1 Heart of America 2014 Richard Dorer NCLE richarddorer@gmail.com Slide 2 I am a paid representative and consultant of Blanchard Contact Lens. I represent Blanchard Contact Lens in the Mid-Western
More informationADVANCED CLINICAL APPLICATIONS AND TROUBLESHOOTING IN SCLERAL LENSES
ADVANCED CLINICAL APPLICATIONS AND TROUBLESHOOTING IN SCLERAL LENSES Langis Michaud, OD Jason Jedlicka, OD Disclosures Langis Honorarium and research grants Alcon Cooper Allergan Bausch*Lomb Johnson *
More informationChoices and Vision. Jeffrey Koziol M.D. Thursday, December 6, 12
Choices and Vision Jeffrey Koziol M.D. How does the eye work? What is myopia? What is hyperopia? What is astigmatism? What is presbyopia? How the eye works How the Eye Works 3 How the eye works Light rays
More informationPROFESSIONAL FITTING AND INFORMATION GUIDE
CAUTION: PROFESSIONALFITTINGAND INFORMATIONGUIDE FLOSI(wilofoconA) RigidGasPermeableContactLensesforDailyWear ONSI 56(onsifoconA) RigidGasPermeableContactLensesforDailyWear TYRO 97(hofoconA) RigidGasPermeableContactLensesforDailyWear
More informationPART 3: LENS FORM AND ANALYSIS PRACTICE TEST - KEY
PART 3: LENS FORM AND ANALYSIS PRACTICE TEST - KEY d 1. c 2. To determine the power of a thin lens in air, it is necessary to consider: a. front curve and index of refraction b. back curve and index of
More informationA CA system for RGP contact lens design
International conference on Innovative Methods in Product Design June 15 th 17 th, 2011, Venice, Italy A CA system for RGP contact lens design L. D Angelo (a), M. Rizzi (a) (a) University of Ferrara, Engineering
More informationDistribution of Refractive Error. 20 year old males. Distribution of Aberrations
Distribution of Refractive Error 20 year old males Distribution of Aberrations Aberrations and Accommodation Unaccommodated Aberations Change with Accommodation Spherical Aberration goes to zero for 2-3
More informationLENSES. Materials, Types and Treatments. Mary E. Schmidt, ABOC, CPO
LENSES Materials, Types and Treatments www.eyesystems.info Mary E. Schmidt, ABOC, CPO mary@eyesystems.info Single Vision Spherical in design All purpose, single focus, may be sphere or cylinder Rx s Aspheric
More informationCrystalens AO: Accommodating, Aberration-Free, Aspheric Y. Ralph Chu, MD Chu Vision Institute Bloomington, MN
Crystalens AO: Accommodating, Aberration-Free, Aspheric Y. Ralph Chu, MD Chu Vision Institute Bloomington, MN Financial Disclosure Advanced Medical Optics Allergan Bausch & Lomb PowerVision Revision Optics
More informationPre-Fitting - History
Pre-Fitting History taking External exam Prescriptions Keratometry/Topography Lens Selection Soft and RGP Insert and Removal (I&R) Tools Stacy Campbell NCLE-AC, COA Eye Care Associates scampbell@eyecare1.com
More informationLENSES. Materials, Types and Treatments. Single Vision. Aspherical Lens Forms
LENSES Materials, Types and Treatments www.eyesystems.info Mary E. Schmidt, ABOC, CPO mary@eyesystems.info Single Vision Spherical in design All purpose, single focus, may be sphere or cylinder Rx s Aspheric
More informationMULTIFOCAL CONTACT LENSES INTRODUCTION
Mario Giovanzana Milano, 15 th december 00 MULTIFOCAL CONTACT LENSES INTRODUCTION In my professional experience over the years I ve developed both support in the production of contact lense as well their
More informationWhat s New in Ocular Biomechanics?
What s New in Ocular Biomechanics? The International Congress of Wavefront Sensing & Optimized Refractive Corrections Wavefront Course January 28, 2006 Torrence A. Makley Research Professor Department
More informationProfessional Fitting and Information Guide
Professional Fitting and Information Guide FOCUS DAILIES FOCUS DAILIES Toric FOCUS DAILIES Progressives DAILIES AquaComfort Plus DAILIES AquaComfort Plus Toric DAILIES AquaComfort Plus Multifocal (nelfilcon
More informationSPHERE, CYLINDER, AXIS, and ADD Power: Why these four variables? Example Prescriptions: UNDERSTANDING A PRESCRIPTION SPHERICAL LENSES 8/31/2018
8/31/2018 UNDERSTANDING A PRESCRIPTION Speaker: Michael Patrick Coleman, COT & ABOC SPHERE, CYLINDER, AXIS, and ADD Power: Why these four variables? Example Prescriptions: +2.50 SPH Simple SPHERICAL Rx
More informationOPH 260 BASIC CONTACT LENS CONCEPTS
OPH 260 BASIC CONTACT LENS CONCEPTS COURSE DESCRIPTION: Prerequisites: OPH 121 and OPH 141 Corequisites: None This course introduces the theory of contact lens fitting. Emphasis is on rigid and soft contact
More information(495) (495)
МЕДТЕХНИКА-СТОЛИЦА (495) 902-59-26 (495) 518-55-99 127 238, г. Москва, Дмитровское ш. 85 ATLAS Corneal Topography Product Overview Model 9000 ATLAS Model 9000 Overview Next-generation corneal topography
More informationVision Shaping Treatment
JOHN WARREN, OD Vision Shaping Treatment WWW.WARRENEYECARECENTER.COM What Is VST? Using customized vision retainer lenses, VST reshapes the front surface of the eye, reducing nearsightedness and astigmatism
More informationChoices and Vision. Jeffrey Koziol M.D. Friday, December 7, 12
Choices and Vision Jeffrey Koziol M.D. How does the eye work? What is myopia? What is hyperopia? What is astigmatism? What is presbyopia? How the eye works Light rays enter the eye through the clear cornea,
More informationAdvanced Fitting of Scleral Lenses
Advanced Scleral Lens Fitting Advanced Fitting of Scleral Lenses Jason Jedlicka, OD, FAAO Indiana University Evalua?ng fit at follow up Evalua?ng landing zone Dealing with as?gma?sm in the over refrac?on
More informationAbout me. Fitting for Success: Understanding the Rx and Guiding the Patient to the Proper Frame. Myopia Hyperopia Astigmatic Presbyopia Cataract
Fitting for Success: Understanding the Rx and Guiding the Patient to the Proper Frame By Tim Elinski About me 46 yrs experience in optical Graduated 1975 Health Optics Degree Certified in 1978 Fellow of
More informationSmall lens. Great freedom.
thezeisslens.com Contact Day 1, the comfortable daily lens. For active moments without glasses. Small lens. Great freedom. thezeisslens.com I like to be active and on the move during my free time. I will
More informationMehrstärken- Kontaktlinsen Michael Wyss
Mehrstärken- Kontaktlinsen Michael Wyss dipl. Augenoptiker FAAO mwyss@kontaktlinsenstudio.ch kontaktlinsenstudio baertschi, Bern, Switzerland Situation on the market Blind-Date Get in contact with your
More informationUNITY VIA PROGRESSIVE LENSES TECHNICAL WHITE PAPER
UNITY VIA PROGRESSIVE LENSES TECHNICAL WHITE PAPER UNITY VIA PROGRESSIVE LENSES TECHNICAL WHITE PAPER CONTENTS Introduction...3 Unity Via...5 Unity Via Plus, Unity Via Mobile, and Unity Via Wrap...5 Unity
More informationThe Unique Mu l t i f o c a l S i l i c o n e H y d r o g e l
C2 MULTIFOCAL The Unique Mu l t i f o c a l S i l i c o n e H y d r o g e l C o n t a c t L e n s UNIQUE DESIGN E X C E L L E N T V I S I O N F O R A L L P R E S B Y O P E S VISUAL EXCELLENCE IN SIMULTANEOUS
More informationPREMIUM LENSES WITH VARIABLE BASE CURVE
PREMIUM LENSES WITH VARIABLE BASE CURVE Inspired by nature - 1 - CONTENT THE ADVANCEMENT OF CAMBER CAMBER TECHNOLOGY Features and Properties Camber Benefits EXPLORING CAMBER LENS SERIES NATURAL NATURAL
More informationTrust your eyes. Presbyopic treatment methods on the cornea. PresbyMAX Decision criteria and patient s acceptance
Trust your eyes. Directory Presbyopic treatment methods on the cornea PresbyMAX The Principle PresbyMAX Expectations and Key Factors PresbyMAX Decision criteria and patient s acceptance PresbyMAX Upcoming
More informationCorneal Asphericity and Retinal Image Quality: A Case Study and Simulations
Corneal Asphericity and Retinal Image Quality: A Case Study and Simulations Seema Somani PhD, Ashley Tuan OD, PhD, and Dimitri Chernyak PhD VISX Incorporated, 3400 Central Express Way, Santa Clara, CA
More informationTraining Eye Instructions
Training Eye Instructions Using the Direct Ophthalmoscope with the Model Eye The Model Eye uses a single plastic lens in place of the cornea and crystalline lens of the real eye (Fig. 20). The lens is
More information3/31/2016. Presented by: Bob Alexander, ABOM/NCLE-AC Lens Consultant Vision Ease. Everywhere and Sportwrap; Understanding Digital Technology
Everywhere and Sportwrap; Understanding Digital Technology Presented by: Bob Alexander, ABOM/NCLE-AC Lens Consultant Vision Ease Digital - Design and Surfacing VE Digital Designs Optimization Compensation
More informationIOL Types. Hazem Elbedewy. M.D., FRCS (Glasg.) Lecturer of Ophthalmology Tanta university
IOL Types Hazem Elbedewy M.D., FRCS (Glasg.) Lecturer of Ophthalmology Tanta university Artificial intraocular lenses are used to replace the eye natural lens when it has been removed during cataract surgery.
More informationDisclosures Over the past year, Matt Kauffman has received. Industry Updates. Fitting Contact Lenses in the Contemporary World
Fitting Contact Lenses in the Contemporary World Maria K. Walker, OD, MS, FAAO, FSLS Matthew J. Kauffman, OD, FAAO, FSLS February 20, 2016 Disclosures Over the past year, Matt Kauffman has received research
More informationOpenStax-CNX module: m Vision Correction * OpenStax
OpenStax-CNX module: m42484 1 Vision Correction * OpenStax This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 Abstract Identify and discuss common vision
More informationGonioscopy Wet-Lab. About Me. About Me Gonioscopy. Indications for Gonioscopy. Billing Gonioscopy 12/13/2012. Code: 92020
About Me Gonioscopy Wet-Lab Marcus Gonzales, OD, FAAO Cedar Springs Eye Clinic (formerly BridgeBuilders Eye Clinic) About Me Gonioscopy Evaluates the anterior chamber angle responsible for the outflow
More informationThe Dysphotopsia Mystery. John J. Bussa, M.D.
The Dysphotopsia Mystery John J. Bussa, M.D. Cataract Surgery Cataract Surgery Desirable Traits Foldable Lens Inert (non reactive) with a memory Thin folds tight and goes through a smaller incision
More informationAstigmatism. image. object
TORIC LENSES Astigmatism In astigmatism, different meridians of the eye have different refractive errors. This results in horizontal and vertical lines being focused different distances from the retina.
More informationTechnology Reference guide. March 2011
Technology Reference guide March 2011 2 Lens Series Progressive lenses were first patented in 1907 and later refined in 1959 into the basic progressive lens design still widely used today. This conventional
More informationKERATOCONUS. In the most advances cases, the corneal deformation can be easy observed fig. 1. Fig. 1
Mario Giovanzana Milano, 14 nd october 01 KERATOCONUS INTRODUCTION The keratocunus is a deformation of the cornea that tends to assume the shape of a cono. The genesis is substantially uncertain. It is
More informationP RO D U C T L I S T. Valid from woehlk.com
P RO D U C T L I S T Valid from 01.01.2015 woehlk.com wöhlk about us wöhlk P RODUCT LIST page 3 Welcome to Wöhlk Contactlinsen our corporate principles inventive spirit customer orientation quality Still
More informationLecture 2 Slit lamp Biomicroscope
Lecture 2 Slit lamp Biomicroscope 1 Slit lamp is an instrument which allows magnified inspection of interior aspect of patient s eyes Features Illumination system Magnification via binocular microscope
More informationProduct Portfolio. Sulcoflex Pseudophakic Supplementary IOLs. Your skill. Our vision.
Product Portfolio Sulcoflex Pseudophakic Supplementary IOLs Your skill. Our vision. Sulcoflex Pseudophakic Supplementary IOLs For when compromise is not an option As a cataract and refractive surgeon,
More informationQuality of Vision With Multifocal Progressive Diffractive Lens: Two-Year Follow-up
Quality of Vision With Multifocal Progressive Diffractive Lens: Two-Year Follow-up Antonio Mocellin, MD & Matteo Piovella, MD CMA, Centro di Microchirurgia Ambulatoriale Monza (Milan) Italy Dr Piovella
More informationProduct Portfolio. Sulcoflex Pseudophakic Supplementary IOLs
Product Portfolio Sulcoflex Pseudophakic Supplementary IOLs Sulcoflex Pseudophakic Supplementary IOLs For when compromise is not an option As a cataract and refractive surgeon, achieving the best possible
More informationOCULUS Keratograph 4. Topographer. We focus on progress
OCULUS Keratograph 4 Topographer We focus on progress Ophthalmologist Versatile and precise For me the Keratograph 4 is an indispensable device for diagnosis and surgical planning. Its automatic measurement
More informationOptics Supplement. Christopher S. Wolfe, OD, FAAO
Optics Supplement Christopher S. Wolfe, OD, FAAO One of the most consistently difficult sections of the NBEO Part 1 exam has been optics. We feel that in order to truly master this material one must: 1.
More informationProduct Reference Guide
37.5mm Axis Verification "V" 5.00-0.25-1.75-1.50-1.25-0.75-0.50-3.75-3.50-3.25-2.75-2.50-2.25-8.50 7.50 - SunRx Prescription Polarized Semi-Finished Single Vision Polarized Single Vision (Gray, Brown and
More informationFinancial Disclosure. Acufocus. Presbyopia Surgery. Inlay Concept 8/14/17. Presbyopia Correction: The Holy Grail of Ophthalmology
Acufocus Financial Disclosure I have no financial interest in any subject presented Presbyopia Correction: The Holy Grail of Ophthalmology Presbyopia Surgery Inlay Concept First conceived in 1949 by Dr.
More informationChapter 25. Optical Instruments
Chapter 25 Optical Instruments Optical Instruments Analysis generally involves the laws of reflection and refraction Analysis uses the procedures of geometric optics To explain certain phenomena, the wave
More informationLearn Connect Succeed. JCAHPO Regional Meetings 2017
Learn Connect Succeed JCAHPO Regional Meetings 2017 Refractometry JCAHPO Continuing Education Program Phoenix and Scottsdale, AZ Craig Simms BSc, COMT, CDOS, ROUB Director of Education, IJCAHPO Program
More informationDr. Magda Rau Eye Clinic Cham, Germany
3 and 6 Months clinical Results after Implantation of OptiVis Diffractive-refractive Multifocal IOL Dr. Magda Rau Eye Clinic Cham, Germany Refractive zone of Progressive power for Far to Intermediate
More informationSubmission to the American Optometric Association Contact Lens and. Cornea Section, Student Research Awards Committee. for
Submission to the American Optometric Association Contact Lens and Cornea Section, Student Research Awards Committee for My Most Challenging Contact Lens Case By: Melisa Hockett Third year Doctor of Optometry
More informationWhy Understand Lens Technology? Everything Evolves. Refined Mediocrity Is Still Mediocrity. Copyright: Phernell C. Walker, II, AS, NCLC, ABOM
Secrets to Designing Specialty Eyewear Contact Information: Phernell Walker, II, AS, Master in Ophthalmic Optics Phernell Walker, II, AS, Email: pureoptics@earthlink.net www.pureoptics.com (254) 338-7946
More informationHeads you win, tails you lose
4 dispensingoptics September 2014 Heads you win, tails you lose By Andrew Keirl BOptom (Hons) MCOptom FBDO CompetencIes covered: Dispensing opticians: Ocular Examination, Contact Lenses, efractive Management
More informationContact Lenses Didn t Work! Now What? Evaluation and Treatment of Aniseikonia
Contact Lenses Didn t Work! Now What? Evaluation and Treatment of Aniseikonia Andrew J Toole, OD, PhD, FAAO The Ohio State University College of Optometry Disclosure Statement: Nothing to disclose Aniseikonia
More informationThe eye & corrective lenses
Phys 102 Lecture 20 The eye & corrective lenses 1 Today we will... Apply concepts from ray optics & lenses Simple optical instruments the camera & the eye Learn about the human eye Accommodation Myopia,
More informationCHAPTER 10. Half-Blind Dovetail Procedures
CHAPTER 0 Half-Blind Dovetail Procedures 6 Chapter 0 D User Guide HALF-BLIND DOVETAIL PROCEDURES Chapter Foreword In these instructions for using the Leigh Dovetail Jig, we have recommended using certain
More informationMultiple-Choice Questions
Multiple-Choice Questions A Board Review Manual 1. A +5.ooD hyperope, with a PD (inter-pupillary distance) of 5 centimeters, is mistakenly given glasses which are decentered outward by 5mm OU. The total
More informationATLAS Corneal Topography System
ATLAS Corneal Topography System Simply accurate for maximum productivity Model 9000 The New ATLAS Take your practice to the next level Carl Zeiss Meditec has taken the world s leading corneal topography
More information