Eye Disorders
A cataract is a clouding of the
natural lens, the part of the eye
responsible for focusing light and
producing clear, sharp images. The
lens is contained in a sealed bag or
capsule. As old cells die they
become trapped within the capsule.
Over time, the cells accumulate
causing the lens to cloud, making
images look blurred or fuzzy. For
most people, cataracts are a natural
result of aging. [
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The small specks or "bugs" that many
people see moving in their field of
vision are called floaters. They
are frequently visible when looking
at a plain background, such as a
blank wall or blue sky. [
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]
The vitreous gel which fills the
inside of the eye sometimes pulls or
tugs on the retina. This pulling
causes the appearance of flashing
lights or lightning streaks, though
there is no flashing lights actually
present. This same sensation
sometimes occurs when one is hit in
the eye and sees "stars".
Diabetic retinopathy is a
potentially blinding complication of
diabetes that damages the eye's
retina. It affects half of all
Americans diagnosed with diabetes.
At first, you may notice no changes
in your vision. But don't let
diabetic retinopathy fool you. It
could get worse over the years and
threaten your good vision. [
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]
Glaucoma
is a disease of the optic nerve,
which is the part of the eye that
carries the images we see to the
brain. The optic nerve is made up
of many nerve fibers, like an
electric cable containing numerous
wires. When pressure inside the eye
increases, damage to the optic nerve
fibers may occur, causing blind
spots to develop. [
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]
Amblyopia is a term used to describe
an uncorrectable loss of vision in
an eye that appears to be normal.
It’s commonly referred to as “lazy
eye” and can occur for a variety of
reasons. [
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]
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