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Page 8 Local Town Pages www.hopedaletownnews.com <strong>November</strong> <strong>2016</strong><br />
Living Healthy<br />
Flashes and Floaters<br />
By: Roger M. Kaldawy, M.D.,<br />
Milford Franklin Eye Center<br />
Many patients will be aware<br />
of small flying “black spots” in<br />
the field of vision in one or both<br />
eyes. These are called floaters<br />
and may be associated with<br />
flashes of light. Flashes and floaters<br />
may have serious implications<br />
on the vision.<br />
What are floaters?<br />
Floaters are small black shadows<br />
in the vision of one or both<br />
eyes, especially when looking at a<br />
specific surface like a white page,<br />
a bright sky or perhaps when<br />
walking on the beach. These<br />
black spots are impurities in the<br />
fluid that fills the back cavity of<br />
the eye. This jelly fluid is called<br />
the “vitreous” and has a consistency<br />
similar to “egg white.” This<br />
vitreous fluid is present in the eye<br />
from birth and is not replaced<br />
or exchanged during life. It is<br />
initially attached to the surface<br />
of the retina, which is the light<br />
sensitive nerve tissue layer that<br />
lines the back surface of the<br />
wall of the eye. It is important<br />
to note that it is not necessarily<br />
abnormal to see black spots in<br />
the vision. The size and number<br />
of floaters seen is variable; some<br />
patients (especially short sighted<br />
people) will be aware of numerous<br />
floaters, while others may<br />
never be aware of the symptom<br />
at all. Some floaters can interfere<br />
severely with vision, while others<br />
are barely noticeable. Although<br />
annoying, floaters are usually<br />
harmless and come and go over<br />
the years.<br />
What are flashes?<br />
Flashes are usually caused<br />
by the vitreous body tugging on<br />
the retina. This tugging occurs<br />
when the vitreous body shrinks<br />
as a normal part of the aging<br />
process. Flashes may last for a<br />
few seconds or several minutes<br />
and can occur on and off for<br />
weeks or months. They are<br />
usually seen at night or in<br />
poor lighting.<br />
Eye migraine can cause<br />
the perception of similar light<br />
flashes, although often these<br />
flashes of light may have numerous<br />
colors. The abnormal light<br />
flashes seen with migraines are<br />
usually very different, appearing<br />
as jagged lines blocking an<br />
area of vision or moving slowly<br />
across the field of vision in one<br />
or both eyes. People who suffer<br />
from migraine headaches will<br />
often know the familiar pattern<br />
of these visual experiences, often<br />
occurring just before the headaches<br />
begin. These migraine<br />
flashes are unrelated to the vitreous<br />
body and its attachment to<br />
the retina.<br />
What causes flashes and<br />
floaters?<br />
The vitreous is composed<br />
of collagen, and this undergoes<br />
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