July 2023 - 36

As people age, muscles that control pupil size and reaction to light lose some strength, which means they need more ambient light to see clearly. (Photo by Tim Christie)
The sun is a source of ultraviolet
radiation. Sunlight exposes us
to two types of UV rays: UVA
and UVB. UVA and UVB can
penetrate and change your skin
and eye cell structure.
contrast between different colors. Blue colors,
in particular, may appear faded or washed out.
Another common eye affliction, cataracts,
also influences our color vision sensitivity.
Cataracts, a clouding of the optical lens,
impact visual clarity of detail and color.
According to the American Academy of Ophthalmology,
" Cataracts affect more than 24
million Americans age 40 and older. By age
75, approximately half of all Americans have
cataracts. "
Modern technology has made cataract surgery
safe and effective, typically restoring 100
percent of vision lost to cataract formation.
It's often better to have cataracts removed
before they advance too far.
Surgery replaces the lens, with the choice
given to the patient whether they want optimum
close-up or distance vision. In recent
years, multifocal lens implants have been
developed. These lenses restore all ranges of
vision, reducing the need for reading glasses
or distance glasses after cataract surgery.
Dr. David Wold, a University of Washington
graduate in ophthalmology, said, " After
cataract surgery, many patients are amazed at
their newfound visual clarity and how much
more vivid they see colors. Because cataracts
develop so gradually, we don't realize how
subtle the vision loss is. "
36 | July 2023
WEATHERED EYES
Outdoor enthusiasts of all kinds are exposed
to sunlight. Years of being in the sun add up,
impacting our entire body, including the eyes.
The sun is a source of ultraviolet radiation.
Sunlight exposes us to two types of UV rays:
UVA and UVB. UVA and UVB can penetrate
and change your skin and eye cell structure.
They can cause burns and injuries, put you at
risk for skin cancer and increase the chance
of eye diseases that can lead to permanent
vision loss.
UVB has been associated with accelerating
cataract formation. In people who are exposed
to UVB over a long period of time, lens opacities
usually develop in the parts exposed
directly to sunlight. It is estimated that cataract
formation can be reduced by roughly 5
percent with appropriate protection.
The eyes naturally filter out most, but not
all, UV rays. Anything that limits UV exposure
to the eye alleviates risk. Good sunglasses
filter out UV rays to protect your eyes and the
skin around the eyes. Look for sunglasses that
block or reflect UV rays. About 20 percent
of UV light enters the eye from reflective
light that comes in from the side; wraparound
designs or side shields are recommended,
especially with darker shades. Sunglasses
can have added benefits, too. Anglers know

July 2023

Table of Contents for the Digital Edition of July 2023

July 2023 - 1
July 2023 - 2
July 2023 - 3
July 2023 - 4
July 2023 - 5
July 2023 - 6
July 2023 - 7
July 2023 - 8
July 2023 - 9
July 2023 - 10
July 2023 - 11
July 2023 - 12
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July 2023 - 14
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July 2023 - 35
July 2023 - 36
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July 2023 - 38
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July 2023 - 40
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July 2023 - 43
July 2023 - 44
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July 2023 - 48
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