Eyes: The Windows to Your Health | National Geographic

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you may have heard the saying that the
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eye is a window to the soul
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well as optimal just we believe the eye
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is a window to the body
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it’s a window to what we call systemic
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disorders like diabetes or high blood
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pressure and we can see signs of these
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when we look at the eye when you study
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heart disease for example you’ll listen
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to the heart but with the eye you
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actually look at it with a microscope
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you can actually see brain tissue which
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is the retina and you can see blood
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vessels and if you look carefully you
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can actually even see red blood cells as
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a zip through the capillaries
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over one third of all known genetic
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syndromes involve the eye we can see
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signs of nutritional deficits nerve
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damage in the back of the eye in vitamin
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b-complex deficiencies stress is another
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big one and it can cause the cells
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behind the eye to start leaking fluid
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it’s like having a blister in the rectum
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and you can see it here this yellowed
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area here we’re looking at the normal
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retina through our slit-lamp
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bio microscope you can see the orange
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color of the retina you can see the
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blood vessels the course over the retina
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you can also see the nerve that connects
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the back of the eye to the brain
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this patient has a really interesting
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finding in the iris we call these
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posterior cine kiai these little brown
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spots are adhesions between the iris and
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the lens they’re signs of inflammation
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which can often indicate inflammation
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that’s occurring or occurred in the body
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itself in this patient we have a little
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microscopic spot of blood on the white
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part of the eye this little spot of
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blood is indicative of one of several
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different things six out of ten times
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it’s caused by high blood pressure
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this patient is a diabetic and he has
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these small blood vessel changes in his
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retina and so when we find this we know
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that this patient needs to take extra
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care to control his or her health so
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these indicators can often be seen in
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the eye before they can be seen anywhere
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else really the eye is such an important

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