| Determining
Damage Once
you have been diagnosed with glaucoma, the goal is to stop
the progression of vision loss.
To this
end, first a determination is made as to how much damage
your optic nerve has sustained and how much of your corresponding
vision has been lost.
A direct visualization of your optic
nerve can be made and an estimate of the amount of damage
inferred. A photo can be taken for comparison in the future.
The amount of vision loss can be judged
with a visual field test, in which flashing lights are presented
to your side and central vision by a computer and you push
a button.
Once the test is over, a diagram of your vision with many
measurements can be printed out and followed over time.
If progression on this vision assessment test can be documented,
you may need more aggressive treatment.


Treatments?
The goal of current glaucoma
treatment is to lower pressure in the eye by turning the
faucet off or by making the drain work more efficiently
using eye drops.
If fluid balance cannot be restored
to the level where no further optic nerve damage is occurring,
laser treatment can be attempted or a new drain may be made
for the eye surgically.
As you recall, high pressure in the
eye is not the only contributing factor to glaucoma. The
amount of oxygen that reaches the optic nerve is also important,
as are genetics. Currently, nothing can be done to alter
your genetics.
As far as reestablishing
a sufficient oxygen level in the eye, there are no direct
treatments. We believe that exercise, and control of high
blood pressure, diabetes, high cholesterol, and stopping
smoking may be beneficial to this end.


Controlling
Pressure
There are three major avenues for
eye pressure control:
Drops: There are many exciting medications
that come to market each year that can turn the faucet of
the eye down or make the drain of the eye function more
efficiently. This serves to lower the amount of fluid in
the eye and decreases the pressure being placed on your
optic nerve.
Laser:
A laser may be fired directly into the drain of your eye
to try to stimulate increased drainage. Again, this serves
to lower the amount of fluid in the eye and decreases the
pressure being placed on your optic nerve.
Surgery:
The main goal of surgery is to create a new drainage system
for the eye. This can be done by fashioning a trap door
on the surface of the eye to allow pressure and fluid buildup
to escape when there is an excess within the eye (trabeculectomy).
Unfortunately, your own body can create scar tissue that
may close this trap door off. Therefore, anti-scarring medications
may be supplemented during and maybe after surgery around
the trap door to prevent the trap door from scarring down.
Alternatively,
a plastic tube can be placed into the eye connected to an
implant that will drain the fluid directly out of the eye.
By no means is this a complete description
of glaucoma and it is not intended to be. It is a brief
synopsis made in laymen's terms. This is a quick overview
of the issues that you and your doctor face in choosing
the best course of action to prevent you from vision loss.


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