the dyop™ revolution allan hytowitz animated vision associates bringing acuity into the 21 st...
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The Dyop™ Revolution
Allan HytowitzAnimated Vision Associates
Bringing acuity into the 21St Century
Copyright©2012 - Animated Vision Associates – All Rights Reserved
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The Dyop™ Revolution
The Dyop™ Revolution
A vision test that is… less expensive,
faster to use, more precise,
…than current vision optotypes.
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The Dyop™ Revolution
The Dyop™ Revolution
“Any sufficiently advanced technology is indistinguishable from magic.”
Arthur C. Clarke’s Third Law
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One of these things is not like the others….
The Dyop™ Revolution
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1984 International Vision Standards
1862 Optotype Precision5 arc minutes or 5.0 arc minutes?
Or is it 5.2 arc minutes or 4.8 arc minutes?
(Pi used to be 3.0)
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1984 International Vision Standards
1862 Optotype Precision5 arc minutes or 5.0 arc minutes?
Or is it 5.2 arc minutes or 4.8 arc minutes?
Pi used to be 3.0
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1984 International Vision Standards
1862 Optotype Precision5 arc minutes or 5.0 arc minutes?
Or is it 5.2 arc minutes or 4.8 arc minutes?
Pi used to be 3.0
A White on Black stimulus gives a more precise refraction
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1984 International Vision Standards
1984 Optotype PrecisionHow much guessing is 3 out of 5 correct answers?
All Clinical images are not the same.
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1984 International Vision Standards
1994 Optotype PrecisionSnellen letters must be 15% smaller … ……………….
to be equivalent to the Landolt ring. - Wolfgang Grimm, 1994 Optometry and Vision Science,
Vol. 71, No. 1, pp 6-13.
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1984 International Vision Standards
The Snellen “hidden secret”
The Snellen Visual Acuity “end point” has the patient identifying 3 out of 5 optotypes, which is a 60% comprehension score.
It is a subjective and a “failing grade” for both optometry AND the patient.
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1984 International Vision Standards
XIV. Review of This StandardXIV.1 A standard is meant to be a stable entity, yet all
points are not established by experimental certainty, deficiencies are periodically revealed and need correction, new developments in tests are occurring, etc. Thus, a standard may be an evolving document and needs to be re-viewed periodically and should not be regarded as immutable.
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1984 International Vision Standards
Problems with Current Vision Tests
• Culturally based / culturally biased• Based upon comprehension and not acuity• 5 arc minute standard is insufficiently precise
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1984 International Vision Standards
Problems with Current Vision Tests
• Tendency for excess refraction• Based upon reverse stimulation• Causes retinal fatigue• Causes decision fatigue
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The Dyop™ Revolution
The Dyop™ Revolution
Our eyes developed as survival sensors to detect motion and distance and NOT just the difference
between the letters ‘E’ and ‘C’.
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The eye is NOT an analog camera
The Dyop™ Revolution
The eye developed as a survival sensor to detect motion and distance
and is NOT an analog camera
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Welcome to Vision Science
Landolt C & Snellen diameter = 5 arc minutes60 arc minutes = 1 degree
360 degrees = circle Landolt C & Snellen diameter = 8.89 mm at 20 feet
90 degrees
Optotypes
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0 m
m V
iew
ing
Dis
tan
ce
C E
200 mm separation20 arc degreesarc width
The Dyop™ Revolution
17Dyop™ perception
Welcome to Vision Science
Elements of AcuityImage Diameter + Threshold Distance = Image Distance
If the Image Diameter is constantAcuity = Image Distance / Threshold Distance
The Dyop™ Revolution
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Anatomy of a digital camera
The eye is akin to a digital camera
The Dyop™ Revolution
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Pixels in the Eye
Pixels in the Eye
Acuity is determined by cone photoreceptor perceptionRed + Green + Blue
The Dyop™ Revolution
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The Dyop™ Revolution
The Dyop™ Revolution10,000 hours later….
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The Dyop™ Revolution
This is a Dyop™(short for Dynamic Optotype™)
22White/Black Dyop™ on a Gray Background
Optimum Dyop™ Black/White on a Gray background 10 % stroke width = 7.6 arc minutes
Dyops™ take the guesswork out of acuity
The Dyop™ Revolution
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1984 International Vision Standards
Landolt Ring and Snellen letters
• Culturally based / culturally biased
• Based upon comprehension and not acuity
• 5 arc minute standard is insufficiently precise
• Tendency for excess refraction
• Based upon reverse stimulation
• Causes retinal fatigue
• Causes decision fatigue
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2012 Dyop™ Vision Standards
Advantages of Dyops™ as the Vision Standard
• Clinical and Research standards are identical
• Minimizes Clinical variations
• Eliminates cultural and educational bias
• Based upon physiology rather than subjective comprehension
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2012 Dyop™ Vision Standards
Advantages of Dyops™ as the Vision Standard
• Significantly more precise
• Significantly faster to administer
• Provides a significant increase in low vision testing ability
• Provides infant/non-literate testing relevant to adult acuity
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How Dyops™ Work
Dyop™ perception
7.6 arc minutes
The size of the 20/20 Dyop™ Distance image remains constant at 7.6 arc minutes.
Acuity = Dyop™ Distance / Threshold Distance (e.g. 20/40)
Image Diameter vs. 20/20 Dyop™ Distance vs. Threshold Distance
The Dyop™ Revolution
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Dyop ™ stroke width versus photoreceptor stimulus path
Thinner Dyop™ = thinner segment photoreceptor stimulus Thicker Dyop™ = thicker segment photoreceptor stimulus
The Dyop™ Revolution
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The Dyop™ Revolution
The Dyop™ Revolution
Our eyes developed to detect motion and distance
photoreceptors
neural layers
100 photoreceptors
1 optic nerve fiber
29White/Black Dyop™ on a Gray Background
Helping the world see clearly, one person at a time
The Dyop™ Revolution
Increased acuity precision.
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Dyop™ Applications
•Acuity Test
•Refraction Test
•Screening Test (Infants/Children)
•Color Perception Test
•Dyslexia Screening Test
White/Black Dyop™ on a Gray Background
The Dyop™ Revolution
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Rapid Dyop™ Acuity measurement
Rapid Dyop™ Acuity Range Determination
The Dyop™ Revolution
You either see the rotation or you don’t.Clockwise or Counter-Clockwise.
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Precise Dyop™ Acuity measurement
Rapid Dyop™ Acuity Range Determination
The Dyop™ Revolution
You either see the rotation or you don’t.Clockwise or Counter-Clockwise.
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Precise Dyop™ Acuity measurement
Rapid Dyop™ Acuity Range Determination
The Dyop™ Revolution
Acuity at a 10 foot virtual distance
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Dyop™ Acuity Referral
Rapid Dyop™ Acuity Range Determination
The Dyop™ Revolution
Find an Optometrist
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Dyop™ Acuity Referral
Rapid Dyop™ Acuity Range Determination
The Dyop™ Revolution
Find an Ophthalmologist
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Precise Dyop™ Refraction measurement
The Dyop™ Revolution
Acuity at a 20 foot virtual distance
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Rapid Dyop™ Refraction measurement
Precise Dyop™ Acuity Determination
The Dyop™ Revolution
Acuity at a 20 foot virtual distance
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Precise Dyop™ Refraction measurement
Precise Dyop™ Acuity Determination
The Dyop™ Revolution
Refraction in 0.06 diopter increments
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Precise Dyop™ Refraction measurement
Precise Dyop™ Acuity Determination
The Dyop™ Revolution
Dyops™ eliminate the difference between the “science of test taking versus the art of prescribing.” - Dr. Richard Heggeland
40Dyop Infant Acuity – 10 foot image
Dyop™ Acuity Screening
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versus the Teller Test
The Teller Acuity Test allows pediatric vision testing to be performed conveniently in a low-stress clinical environment, rather than in a laboratory. The Teller Acuity Test is designed specifically for easy administration. The test takes only about five to 10 minutes to complete for both eyes, and involves no discomfort on the part of the patient.
Dyop Infant Acuity vs. the Teller Test
Dyop™ Acuity Screening
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Rotating Dyops™ alternately appear in the Left and Right Panels. The Dyop™ images get incrementally smaller with each cycle.
At a 5 foot Viewing Distance the “4 foot” Dyop™ images cannot be seen.Seeing the “4 foot” Dyop™ images at a 3 foot Distance indicates 20/20 acuity.
Dyop Infant Acuity – 10 foot image
Infants and children and non-verbal adults.A 60 seconds test that doesn’t need reading skills
Dyop™ Acuity Screening
43Dyop Infant Acuity – 10 foot image
Dyop™ Acuity Screening
Rotating Dyops™ alternately appear in the Left and Right Panels. The Dyop™ images get incrementally smaller with each cycle.
At a 3 foot Viewing Distance the “4 foot” Dyop™ images CAN be seen.Seeing the “4 foot” Dyop™ images at a 3 foot Distance indicates 20/20 acuity.
Infants and children and non-verbal adults.A 60 seconds test that doesn’t need reading skills
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Dyop™ Dyslexia Screening
Chromatic Refraction™
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Dyop™ Dyslexia Screening
Chromatic Refraction™
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Dyop™ Dyslexia Screening
Chris Chase, Western University
Chromatic Refraction™
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How much value can Dyops™ add to the
practice of an Eye Care Professional?
The Dyop™ Return on Investment
The Dyop™ added value
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___ more patient per hour ___ more patients per day ____ more patients per week _____ more patients per month ______ more patients per year plus ______ extra sets of glasses
The Dyop™ Return on Investment
The Dyop™ added value1 patient
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_1_ more patient per hour ___ more patients per day ____ more patients per week _____ more patients per month ______ more patients per year plus ______ extra sets of glasses
The Dyop™ Return on Investment
The Dyop™ added value1 patient
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_1_ more patient per hour _5_ more patients per day ____ more patients per week _____ more patients per month ______ more patients per year plus ______ extra sets of glasses
The Dyop™ Return on Investment
The Dyop™ added value1 patient
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_1_ more patient per hour _5_ more patients per day _25_ more patients per week _____ more patients per month ______ more patients per year plus ______ extra sets of glasses
The Dyop™ Return on Investment
The Dyop™ added value1 patient
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_1_ more patient per hour _5_ more patients per day _25_ more patients per week _100_ more patients per month ______ more patients per year plus ______ extra sets of glasses
The Dyop™ Return on Investment
The Dyop™ added value1 patient
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_1_ more patient per hour _5_ more patients per day _25_ more patients per week _100_ more patients per month _1200_ more patients per year plus ______ extra sets of glasses
The Dyop™ Return on Investment
The Dyop™ added value1 patient
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_1_ more patient per hour _5_ more patients per day _25_ more patients per week _100_ more patients per month _1200_ more patients per year plus __600_ extra sets of glasses
The Dyop™ Return on Investment
The Dyop™ added value1 patient
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_1_ more patient per hour _5_ more patients per day _25_ more patients per week _100_ more patients per month _1200_ more patients per year plus __600_ extra sets of glasses
Per Doctor
The Dyop™ Return on Investment
The Dyop™ added value1 patient
56White/Black Dyop™ on a Gray Background
How much is each exam worth?$20
The Dyop™ Return on Investment
The Dyop™ added value1 patient
57White/Black Dyop™ on a Gray Background
How much is each exam worth?$20
$20 times 25 patients per week = $500
The Dyop™ Return on Investment
The Dyop™ added value1 patient
58White/Black Dyop™ on a Gray Background
The Dyop™ Return on Investment
The Dyop™ added value1 patient
How much is each exam worth?$20
$20 times 25 patients per week = $500
4 weeks ROI per Doctor = $2,000
48 weeks added profit per Doctor = $24,000
59White/Black Dyop™ on a Gray Background
How much is each exam worth?$20
$20 times 25 patients per week = $500
4 weeks ROI per Doctor = $2,000
48 weeks added profit per Doctor = $24,000
The Dyop™ Return on Investment
The Dyop™ added value1 patient
60White/Black Dyop™ on a Gray Background
More referrals to Dyop™ Certified Practitioners
Web based vision standard = more patients
More precise refractions = better patient service
More precise refractions = fewer patent do-overs
Faster refractions = more patients serviced
The Dyop™ Return on Investment
The Dyop™ added value1 patient
61White/Black Dyop™ on a Gray Background
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The Dyop™ Return on Investment
200,000 global optometrists
50,000 global ophthalmologists
7 billion people
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The Dyop™ Revolution
The Dyop™ Revolution
Helping people see clearly, one person at a time
Animated Vision Associates
Welcome to the Dyop™ Revolution
Copyright©2012 - Animated Vision Associates – All Rights Reserved