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Welcome back.
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We're going to continue on our
hit parade of diseases of the eye
by moving further
and further back into
the rest of the eye,
in particular, the uvea.
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Uveitis is going to be
just inflammation of uvea.
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So what is the uvea?
Okay,
here's a diagram of the eye.
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The sclera you're all familiar with,
that's the white connective tissue element.
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The whites of the eyes, that forms an
intact kind of sphere around the eyeball.
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And we're going to
be inside of that.
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Inside of that the various
layers are the choroid,
which is going to be the
vascularized component
that's going to provide the nutrition
and oxygenation for the retina
and for the vitreous body, etc.
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The ciliary body, the choroid
and the iris
constitute the uvea.
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And they are actually all part
and parcel of one big structure.
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But clearly,
as they encircled the eye,
you can see that they
can influence and affect
pretty much every other
structure of the eye.
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So Uveitis is going to be inflammation
of one or all of those components
of the uvea- the iris,
the ciliary body and the choroid.
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It can also clearly
affect the retina
and the vitreous body so you
can have something called
Chorioretinitis or Vitritis
as a consequence of uveitis.
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As we go through the
next set of slides,
everything that's red is
going to be one of those areas
of the uvea or associated
structures that are inflamed,
and we're just going to go through
the naming of some of the inflammation
or inflammatory disorders that
are associated with the uvea.
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Okay?
So there's the vitreous
body in the middle,
and we have the surrounding uvea
identified here in a darker red.
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Anterior uveitis is the
most common form of uveitis
and can be just Iritis
involving the iris
or can be Cyclitis just
involving the ciliary body
or can be Iridocyclitis which is
both the iris and the ciliary body.
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Pretty simple.
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But I mean obviously
bad diseases.
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The Pars planitis or the
pars plana is the connection
between the ciliary body
and the rest of the choroid.
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And you can have just
inflammation at that segment.
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So that's indicated
here in the darker red.
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You can have vitritis
as I told you earlier,
which is inflammation associated
with the vitreous humor
there in the vitreous chamber.
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You can have Choroiditis
so that's just the choroid
not the pars plana not the
iris, not the ciliary body,
but just the choroid is
inflammed, Choroiditis.
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You can have Chorioretinitis
or retinochoroiditis
depending on what you like,
that can involve both the
choroid and the retina.
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You can have just retinitis,
that is a consequence
of inflammation that has been
translocated into the retina.
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And you can have Neuroretinitis
involving both the retina
and the optic nerve.
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So depending on where
the inflammation is,
you have various names,
we're going to treat them
pretty much all the same,
as we'll see at the end.
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It's basically inflammation
that may or may not
have an infectious cause
but we need to get rid
of that inflammation
before we get some serious
damage and go blind.
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So the treatments
can be all the same
but there may be different portions
of the eye that are involved.