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| How
do I Become a Patient? - top of page |
| We see patients
who have developed changes in the vitreous and / or retina.
Most of our patients are referred to us by their Primary Eye
Care Physician.
Your doctor has noted such changes in your eyes and feels
that you should be seen by a specialist.
We pride ourselves as being readily available to our patients,
since a large portion of our patients are sent to us on an
emergency basis. If your condition is an emergency we will
see you that day. If you are not being referred as an emergency,
we will do our best to give you the next available appointment
at a time that is convenient for you.
It is the nature of our practice to see several emergencies
each day. This may cause us to run behind schedule from time
to time. We appreciate your patience if this occurs. |
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| What
is an Eye Exam Like? - top of page |
| In order
to provide you with a complete eye exam, your pupils will need
to be dilated each time we examine your eyes. Dilation makes
driving difficult. If you can, arrange for someone to come with
you to drive you home. If this is not possible, we can arrange
transportation for you.
Upon arriving for your first exam, you will be asked to fill
out a short patient information form. Please bring with you
your insurance cards, a current list of medications, and a
list of any allergies that you may have. Our staff will be
happy to make copies of these for your record and to help
you if you need any assistance.
You will then be escorted to an examination room. The technician
will ask you a few questions concerning your eye problem and
will perform a complete review of your health. They will then
check your vision and eye pressure and begin dilating your
eyes.
Once your eyes are dilated, the doctor will perform a complete
eye exam with particular attention to the vitreous and retina.
This will involve the use of bright lights which will temporarily
blur your vision. When the exam is finished the doctor will
provide you with an explanation of the findings and discuss
with you any further tests or treatments. |
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| Where
do I have Surgery Performed? - top of
page |
If vitreous
and retinal surgery is required, our doctors are well trained
and able to provide the newest surgical techniques. They are
also actively involved in developing and evaluating new surgical
methods, including new techniques for less common retinal
problems.
Laser Surgery: We have a laser in each of our offices so
that we may provide timely treatments for our patients. Lasers
are most commonly used for: Diabetic Retinopathy, Macular
Degeneration, Retinal Vascular Diseases, Retinal Tears
Office Surgery: We are capable of performing many operative
procedures within each of our offices. Examples include: Repair
of some Retinal Detachments, Repair of Retinal Tears, Injections
of Medications into the eye.
Out-Patient Surgery: We provide our surgery on an out-patient
basis, however, overnight rooms are available if needed. |
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| What
is Diabetic Retinopathy? - top of page |
There
are two Kinds of Diabetic Retinopathy:
In diabetic retinopathy the blood vessels of the retina become
abnormal and cause the problems that people with diabetes
have with their eyesight. Normally, the blood vessels in the
retina do not leak. But with diabetes, the retinal blood vessels
can develop tiny leaks. These leaks cause fluid or blood to
seep into the retina. The retina then becomes wet and swollen
(called "thickened" in some scientific studies)
and cannot work properly. The form of diabetic retinopathy
caused by leakage of the retinal blood vessels is called non-proliferative
(or background) diabetic retinopathy.
Another problem with the retinal blood vessels in diabetes
is that they can close. The retinal tissue, which depends
on those vessels for nutrition, will no longer work properly.
The areas of the retina in which the blood vessels have closed
then foster the growth of abnormal new blood vessels, called
neovascularization, that can be very bad for the eye because
neovascularization can cause bleeding and scar tissue that
can result in blindness (total loss of vision). The form of
diabetic retinopathy caused by closure of the blood vessels
and in which neovascularization develops (proliferates) is
called proliferative diabetic retinopathy.
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| What
is Macular Degeneration? - top of page |
Age-Related
Macular Degeneration (AMD) is the most common cause of vision
loss in people over the age of 50, and it is currently the
number one cause of legal blindness in the Western World.
To understand this condition, it is important to understand
how the normal eye works. The eye functions essentially like
a camera. Light comes in from the front of the eye, is focused
by the lens on the retina, and the retina is like the film
in the camera. It takes the picture and sends that picture
through the optic nerve to the brain. You may have had your
lens surgically removed and replaced with an implant if you
have had cataract surgery.
The center part of the retina is called the macula. This
is the part of the retina that is responsible for the functions
of central vision, including reading, driving, watching television,
and identifying people’s faces. It is also the part
that is affected in the condition we call macular degeneration.
Simply put, the disease is a degeneration of the macula.
As you may know, there are 2 types of macular degeneration.
In the "dry", or "atrophic" form, there
is atrophy and deterioration of the cells in the macula. This
is usually accompanied by yellowish deposits under the retina
called "drusen". This form of AMD causes gradual
visual loss which is usually mild, but may become severe.
This is the most common form of AMD, accounting for 85% of
all cases. There is NO known effective treatment for this
form of the disease.
Only 15% of patients have the "wet" or "exudative"
form of AMD but these patients usually have the most severe
visual loss. In this form of AMD, abnormal blood vessels grow
underneath the retina, which leak and bleed. In 65% of these
cases, those vessels are not directly underneath the center
of the retina, and they can be treated with a laser. This
is still the gold standard of treatment. While the laser treatment
leaves a scar and a blind spot, it can prevent further visual
loss, and in certain cases, improve the vision.
In 35% of cases of "wet" AMD, the abnormal vessels
grow underneath the center of the retina (called the "fovea").
These cases are called "subfoveal", for "underneath
the fovea", and conventional laser treatment is of marginal
benefit. The treatment leaves a central blind spot, and in
many cases makes the vision worse. However, studies have proven
that this treatment leaves a smaller blind spot than the patient
would have if the disease would run its course untreated.
There are several different laser treatment choices when the
vessels are directly under the center of the macula. While
none have been shown to improve the vision, in some cases
the laser treatment may prevent further visual loss. |
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| What
is Retinal Detachment or a Retinal Tear? - top
of page |
Most serious
retinal problems that require surgery are caused by problems
with the vitreous. The vitreous is much like the clear "white"
of an egg and it fills the central cavity of the eye. The
vitreous is attached to the retina. It is most strongly attached
to the retina at the sides of the eye. It is also attached
in the back part of the eye to the optic nerve, the macula,
and the large retinal blood vessels.
As a person ages, the thick vitreous gel becomes less like
a gel and more like a fluid. Small pockets of fluid form within
the gel of the vitreous. As the eyeball moves, the liquefied
vitreous moves around inside the vitreous cavity. Because
of this movement of fluid, the vitreous begins to pull on
the retina. With time, the vitreous can pull free and separate
from the retina and optic nerve in the back (or posterior)
part of the eye. This is called a "posterior vitreous
detachment" (PVD).
Why is a retinal tear considered a serious problem? When
a tear of the retina occurs, the liquid in the vitreous cavity
may pass through the tear and get under the retina. The liquid
collects under the retina and lifts it up off the back wall
of the eye. Little by little, the liquid from the vitreous
passes through the retinal tear and settles under the retina,
separating it from the back wall of the eye. This separation
of the retina is called a retinal detachment. Vision is lost
wherever the retina becomes detached. Because most tears are
located in the peripheral (or side of the) retina, the retinal
detachment first results in loss of side, or peripheral, vision.
A patient may notice a dark shadow, or a veil, coming from
one side, above, or below. In most cases, after a retinal
detachment starts, the entire retina will eventually detach
and all useful vision in that eye will be lost. |
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| What
is Vitreous Surgery? - top of page |
| Occasionally,
a retinal detachment is so complicated and severe that it cannot
be treated with either standard scleral buckling surgery or
pneumatic retinopexy. In such cases, vitreous surgery to reattach
the retina may be necessary. Vitreous surgery is performed in
the hospital, often under general anesthesia. The vitreous is
removed and, therefore, this procedure is called "vitrectomy."
The surgeon uses a fiberoptic light to illuminate the inside
of the eye and other instruments inside the eye, such as forceps,
and scissors, to do the surgery. The vitreous is replaced during
the operation with either clear fluid that is compatible with
the eye, or with air that completely fills the eye. Over time,
this fluid (or air) is absorbed by the eye and is replaced by
the eye's own fluid; the eye does not replace the vitreous itself.
The lack of vitreous does not affect the functioning of the
eye.
Vitrectomy is required for retinal reattachment in a variety
of conditions. For example, scar tissue may grow on the vitreous
or surface of the retina and pull on the retina and detach
it. Occasionally, something is in the vitreous, such as blood,
that prevents the passage of light through the eye to the
retina. The most common conditions requiring vitrectomy are
vitreous hemorrhage with retinal detachment, proliferative
vitreoretinopathy, giant retinal tears, diabetic retinopathy
with vitreous hemorrhage and / or traction retinal detachment,
epiretinal membranes (macular pucker), intraocular infection
(endophthalmitis), trauma, and intraocular foreign body.
In a vitrectomy, instruments are passed through the sclera
into the vitreous cavity. A variety of instruments can be
used to remove the vitreous gel and any scar tissue that may
be growing on the surface of the retina. A laser probe can
be inserted into the eye so that laser treatment can be done
during surgery.
Vitrectomy can be combined with the placement of a scleral
buckle. Occasionally, air, gas, or silicone oil is placed
in the vitreous cavity. These materials hold the retina in
place against the back wall of the eye while the laser scars
are taking hold. After this surgery, it may be important for
the patient to maintain a certain position of the head, which
is often a face-down (prone) position. Eventually, the air
or gas is absorbed by the body and replaced by fluid produced
by the eye. If silicone oil has been used, it usually must
be removed at a later time with another surgical procedure.
Vitreous surgery usually lasts one to two hours but, with
very severe and difficult problems, may take many hours. Following
surgery, the patient may experience some discomfort and a
scratchy sensation in the eye, but significant pain is unusual.
If it occurs, the surgeon should be told immediately. |
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Phone: (863) 297-5400 :: Toll Free: 1-800-472-8867
Email: info@crmd.net |
Content Copyright © Vitreous and Retina Consultants
All Rights Reserved |
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