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It's a little-known
fact that, in spite of all the advances in eye care
technology today, even healthy eyes still contain
some imperfections called higher order aberrations.
One type of higher order aberration common to cataract
patients are spherical aberrations, which can lead
to a gradual reduction in vision acuity and function. |
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| MESOPIC
LIGHTING CONDITIONS* |
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| Spherical Aberration |
Aspheric Correction |
Note : Computer
simulated visual images and mesopic lightening
conditions
* Refers
to dim light level of 3 candelas/m2 |
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| An aberration is an
irregularity in the shape of the eye's refractive
surface that can distort vision. As you get older,
your eye's lens gets thicker and rounder, causing
image quality to deteriorate. Spherical aberrations
are generally associated with : |
- Double vision
- Blurriness
- Halos
- Loss of contrast
- Poor night vision
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| The AcrySof® IQ
lens is designed to reduce spherical aberrations,
increase contrast sensitivity, and improve functional
vision. The overall result of the AcrySof® IQ
lens offers these advantages over traditional spherical
cataract lenses : |
- Enhanced clarity
- Improved image quality
- Filtered blue light for rich, vibrant color
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The Acrysof® IQ lens is among
the family of AcrySof® IOLs that are the most
widely used for cataract surgery, with more than
30 million implanted worldwide.
Contrast sensitivity is the ability to see objects
that may not
be outlined clearly or don't stand out against a
background. Contrast sensitivity often declines
along with age. Cataracts,
in particular, can affect contrast sensitivity. |
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A person with low contrast
sensitivity may have difficulties with :
- Seeing traffic lights or cars at night
- Reading in low light conditions
- Tired eyes from watching television
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| It's important to keep
in mind that a person with poor contrast sensitivity,
due to cataracts, may still test well on the 20/20
visual acuity chart but still experience blurred,
cloudy vision. |
- The AcrySof® IQ lens, in a controlled,
randomized clinical study, showed a statistically
significant improvement in mesopic contrast
sensitivity over the control lens at 90-120
days after the second eye implant. (Mesopic
vision is a combination of well-lit conditions
and low light conditions.)
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Functional vision is
an important consideration for cataract patients,
especially in low visibility conditions, where seconds
can matter in recognizing danger.
The AcrySof® IQ lens offered statistically and
clinically significant improvements in night driving
test conditions that simulated city and rural settings
under normal, glare and fog conditions. |
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In these tests, the
IQ lens performed functionally better in 34 of 36
conditions tested. The performance in 12 of these
conditions was statistically significant, with the
greatest advantage observed in detection and identification
of city pedestrians and rural warning signs under
glare and fog conditions.
The improved functional vision of the AcrySof®
IQ lens gave respondents greater time to take appropriate
action.
Ask your doctor if the AcrySof® IQ lens is right
for you. |
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