Dyop® - Dynamic Optotype™ Helping
the world see clearly, one person at a time. |
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“wE rEad wOrdS aNd nOt jUst lEttErs.” Or
what you thought you saw: We
read words, not just letters. The letters in the
two sentences above seem the same, but the words are different because the
letters are different. The CAPITALS of some of the letters in the
first version of the sentences slow down your ability to read and understand
those words and that sentence. The de-coding (cognition) of
letter-based words requires a symbiotic recognition of the letters to form a
word, and the recognition of the relationship of that word to the words
adjacent to it. Focusing on static letters results in a loss of
cognition and reading skills/speed. A refraction which
uses static images has a tendency for a person to want to maximize the static
image letter contrast. The result is that those extra-crisp static
letters induce an overminus (excess spherical power) in the refraction. That
excess minus power in your lenses has the effect of reducing the ability to
properly decode letters into words and reduces cognition. |
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Are your glasses making you blinder?
Take the Dyop® ten second visual precision test.
https://www.dyop.net/documents/Dyop-Acuity_10-Feet.gif
Stand ten feet (3 meters) from the monitor and
note the smallest
diameter spinning ring Dyop you can clearly
detect as spinning.
It is easy to notice when your glasses “need to be
stronger” and do NOT have sufficient minus spherical
magnification power. If you are “nearsighted” (myopic) the
images you see typically will be blurry. However, your glasses may actually be making you
“blinder” by having too much minus spherical magnification
power if you are “near sighted” (myopia). Your
glasses may also be making you “blinder” by not having enough plus spherical
power if you are “far sighted” (hyperopia).
Because of the need for cylinder compensation, it is
virtually impossible to have a refraction without the professional assistance
of an optometrist, ophthalmologist, or optician. Your online
acuity response is NOT the same as a refraction. If you are nearsighted, you may not realize that you
have excess minus spherical power. The
images look clear. Perhaps TOO clear. If you
move your glasses about 1 inch forward from your eyes you may notice that not
only do the words get smaller, but the words get more coherent and easier to
read. The increase in cognition is indicative of an overminused
refraction (too much spherical minus power). That
overminus is likely an inherent flaw in 1862 based static image tests where
fixation on letters is the determinant of the refraction rather than the
ability to decode and read words. If you are “far sighted” (hyperopia), not having
enough plus spherical power may let you see the
letters despite the visual strain. However, the inherent
fixation on static image tests may also result in not enough plus spherical
power to compensate for the hyperopia and an inadvertent reduction
in cognition. A possible explanation for that excess minus power is
that focusing on static letters during a refraction
encourages a tendency to fixate and strain to see those letters as clearly
and crisply as possible. Seeing individual letters as
“extra-crisp” interferes with the cognition of letter-based words. Having too much power in your current refraction likely
increases visual stress, reduces cognition, and reduces
productivity. It is induced dyslexia (reduced
ability to read words) from an improper refraction. That visual stress from fixating on static letter targets
something most people do NOT notice during the refraction
process. Instead, it gets noticed as visual strain while driving,
reading, or using a computer. When people have “computer vision
syndrome,” most people fail to realize that the problem is their
glasses rather than their eyes. The clarity of what we see in the 21st century
is significantly more precise (crisp) than anything conceivable to Herman
Snellen in 1862 when he created the classic static letter-based vision
test. That need for increased visual precision due to computer use
was also something Snellen could not have envisioned.
If you wear glasses or contact lenses, those lenses help
you see more clearly by bending light to compensate for the lack of
perfection of your biological lenses. If you are nearsighted
(myopia), the lens will be a converging lens. If you are
farsighted (hyperopia), the lens will be a Concave lens. The
lens will likely also have a subtle tilt either forwards or backwards to
compensate for cylinder adjustments, and possibly a horizontal tilt to
compensate for axis adjustments.
The Dyop® test measures visual acuity (clarity) and is
NOT a refraction. A refraction measures sphere, cylinder, and axis
- the components essential for glasses and contacts. For a
refraction you need to see an Optometrist or Ophthalmologist, and NOT an
on-line vision test. |
The Dyop® Vision Test is intended to be a precise
indication of visual clarity, regardless of your monitor
size. Select the correct monitor size for the test. Use
the Up/Down Arrows or the mouse scroll wheel to adjust the Dyop® image
size until you have the smallest gap/segment you can clearly detect as
spinning /moving. The smallest Dyop® diameter where
you can still detect gap/segment spinning determines
the acuity endpoint and corresponds to your
visual clarity. Since we see in Red, Green, and Blue rather than just Black and White,
you can also check your acuity endpoint and visual
clarity in color. Note: Dyop® tests
are for vision screening purposes only and
are NOT a substitute for an examination by a licensed vision
care professional. 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, Alpharetta, GA, 30022 Cell:
404-281-7798 Copyright©2023
DyopVision™ Associates. All Rights Reserved. |