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Introducing the Dyop® The “Revolutionary” Method for Measuring
Visual Clarity (Acuity)
A Dyop®
(pronounced “di-op”) is a calibrated segmented spinning ring visual target
(optotype) which helps doctors (and you) test how clear your vision
is. Vision is a dynamic process inherent in
all animals. The world we see is
dynamic, NOT static. Our
eyes function as biological machines to enable us to detect motion, distance,
and colors so that we can detect predators and game and eat rather than be
eaten. A Dyop provides a strobic stimulus to the photoreceptors
in the center rear area (called the fovea) of your eye’s retina. A Dyop test is better than previous
vision test methods using letters (aka, Snellen “Big E” test) or static
shapes because it is based on how your eyes actually work. Static vision tests are based on how well
you recognize culturally-dependent letters or symbols and are influenced by
where you're from or how much you've practiced. Using a Dyop makes vision tests
simpler, more precise, and more consistent. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
= = = = = = = = = = = = = = = = = = = = = = How Acuity Works The properties of visual clarity (acuity)
are the SIZE OF THE IMAGE being
observed, the VIEWING DISTANCE to that image, and the ability of the
visual system to PROCESS THAT IMAGE as clearly as possible (Resolution
Acuity). As a spinning Dyop®
ring gets smaller, the (equally sized) gaps and segments become so small that
it becomes impossible for the eye to detect the direction of the Dyop ring
rotation. The Dyop acuity endpoint
is the smallest Dyop diameter where the rotation direction of the
spinning ring can still be detected.
It serves as a precise indicator of visual clarity and vision
correction. A Dyop test can measure
vision without the need for patient literacy, measure vision
in infants as young as 14 months of age, and let doctors
precisely measure vision in color enabling potential diagnostics for symptoms
of dyslexia and glaucoma.
Static acuity tests are inherently imprecise,
inconsistent, mistake the process of visual cognition for visual resolution
processes, and have an overly large stimulus area to benchmark vision rather
than the empirically determined smaller Dyop stimulus size. As a result, static vision tests such
as Snellen also deplete the dynamic response of the color receptive
photoreceptors in the fovea and lack the uniform precision of Dyop
testing. As a result static vision tests
tend to add excess minus power to acuity and refractions, may
lead to angular elongation
of the eye and increased myopia, and may indicate that Snellen testing may be a factor in the Global Epidemic of
Myopia. https://www.dyop.net/documents/Snellen_vs_Dyop_Refractions-Sanni.pdf = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
= = = = = = = = = = = = = = = = = = = = = = IF you wear
glasses, a simple test to verify that your lenses are too strong (with too
much minus power) is to push your glasses about a half inch away from your
face and see if the words you are reading become larger and more
legible. That Snellen-induced excess
minus power is typically about 0.25 to 0.50 dopters, which isn’t much but it
does reduce your cognistion and IQ by possibly 10 points. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
= = = = = = = = = = = = = = = = = = = = = = What Regulates Acuity Acuity
is NOT regulated by the brain. It is regulated by the relative focal
depths and changing intensities of the colors Red, Green,
and Blue as they are
perceived by the fovea at the back of your eyes. The color sensitive photoreceptors send
that signal to the layer of neuroganglia in front of the retina so that Red
is focused BEHIND the retina, Green
is focused ON the retina, and Blue
is focused in front of the retina.
This in turn regulates the shape of the lens to bring that image into
focus. As you are seeing these images on your computer
monitor, tablet, or Smartphone, you think that you are seeing lines,
shapes, letters, and/or words. What you are actually
seeing are pixels of light moving rapidly across the surface of your computer screen, tablet, or smartphone in
combinations of the colors of Red, Green,
and Blue.
For
vision to be effective and efficient, we need to be unaware of that process. This
process of acuity regulation and accommodation is called Chromatic Triangulation. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
= = = = = = = = = = = = = = = = = = = = = = A simple experiment to
demonstrate that acuity is regulated by the Chromatic
Triangulation of Red, Green,
and Blue is to close one eye and look around the room where you are at the
moment. You will notice that with only
one eye open you can still determine the relative distance to nearby objects
without the need for binocular vision. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
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This is identical to the basic concept of light that Isaac
Newton discovered in 1665 when he filtered light through a prism.
The result is that using
a Dyop for acuity and refractions is up to six times more precise
than 1862 Snellen letter-based testing (which uses the culturally
dependent static letters or symbols of Recognition Acuity),
is up to eight times more consistent, and is up to three times more
efficient. A Dyop also can measure
acuity regardless of the subjects’ literacy skills or culture, easily
enables testing of children or infants, and enables measurement of acuity in color for potential diagnostic
and/or therapeutic use. A major factor
with dyslexia, migraines, and epilepsy is the Near
Vision Stress associated with a lower
percentage of Green receptive
photoreceptors. https://www.dyop.net/documents/Dyslexia_and_Color_Perception-SandraStark.pdf https://www.dyop.net/documents/ASOP-06-0651-Dyop_Color_Perception.pdf = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
= = = = = = = = = = = = = = = = = = = = = = Basic Online Dyop Acuity Test – Landscape
format https://www.dyop.net/documents/Dyop_acuity_screening.gif (Static image
of the Dyop online Acuity test.)
Basic Online Dyop Color Screening Test-
Landscape format Basic Dyop Blue Green Visual Screening Test (Static image
of the Dyop online Color Screening test.)
Basic Online Dyop Acuity Test –
Smartphone format https://www.dyop.net/documents/Dyop_Acuity_Test_S.gif Basic Online Dyop Color Screening Test – Smartphone format https://www.dyop.net/documents/Dyop-Blue-Green_S.gif
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= = = = = = = = = = = = = = = = = = = = = = Dyop Visual-Impairment
Test Dyops may also be used
to test for visual and mental impairment associated with intoxication, PTSD,
concussion injuries, and possible mental difficulties such as Alzheimer’s. https://www.dyop.net/impairment.htm https://www.dyop.net/documents/Dyop_Visual-Impairment_Test-x10.swf.html
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= = = = = = = = = = = = = = = = = = = = = = The Dyop®
(Dynamic Optotype™) tests and concept are covered under U.S. Patent US
8,083,353 and International
Published Patent WO 2011/022428. for further
information contact: Allan Hytowitz at Allan@DyopVision.com 5035 Morton
Ferry Circle, Johns Creek, GA, 30022
/ 404-281-7798 Copyright ©2024
DyopVision™ Associates. All Rights Reserved. |
