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What is a vitrectomy?
Victrectomy is a type of eye surgery that treats
disorders of the retina and vitreous.
The retina is the light-sensing tissue at
the back of the eye. The vitreous is the clear,
jelly-like substance that fills the middle of the eye.
The vitreous is removed during a vitrectomy
surgery and is usually replaced by a saltwater solution.
Why do you need a vitrectomy?
Your ophthalmologist (medical eye doctor) may
recommend vitrectomy surgery to treat the following eye problems:
- Diabetic retinopathy, where there is
bleeding and scar tissue
- Some retinal detachments
- Infection inside the eye
- Severe eye injury
- Wrinkling of the retina (macular pucker)
- Macular hole (partial loss of vision
for fine details)
- Certain problems after cataract surgery
How can a vitrectomy improve your vision?
Vitrectomy surgery often improves or stabilizes
your vision. The operation removes any blood or debris (from
infection or inflammation) that may be blocking or blurring light
as it focuses on the retina.
Vitrectomy surgery removes scar tissue that can
displace, wrinkle or tear the retina. Vision is poor if the
retina is not in its normal position.
A foreign object may be stuck inside the eye as
the result of an injury. Most foreign objects will damage
vision if they are not removed.
What happens if you decide to have vitrectomy
surgery?
Before surgery
Your ophthalmologist will decide whether local
or general anesthesia is best for you. You may have to stay
overnight in the hospital. Before surgery you will need to
have a physical examination to alert your ophthalmologist to any
special medical risks.
A painless ultrasound test may be performed
before the surgery to view the inside of the eye.
Vitrectomy surgery
The length of the operation varies from one to
several hours, depending on your condition. In certain
situations, your ophthalmologist may do another surgical procedure
at the same time, such as repairing a detached retina or removing
a cataract.
Your ophthalmologist does the operation while
looking into your eye with a microscope. Various miniature
instruments are placed into the eye through tiny incisions in the sclera
(white part of the eye).
In order to get the best possible vision for
you, your ophthalmologist will do one or more of the following:
- Remove all cloudy vitreous
- Remove any scar tissue present, attempting to
return the retina to its normal position
- Remove any foreign object that might be in
the eye
- Treat the eye with laser to reduce future
bleeding, or to fix a tear in the retina
- Place an air or gas bubble in the eye to help
the retina remain in its proper position. The bubble
will slowly disappear on its own
- Inject a special fluid that is later removed
from the eye.
After surgery
You can expect some discomfort after
surgery. You will need to wear an eye patch for a short
time. Your ophthalmologist will prescribe eye drops for you
and advise you when to resume normal activity.
If a gas bubble was placed in your eye, your
ophthalmologist may recommend that you keep your head in special
positions until the gas bubble is gone. Do not fly in an
airplane or travel up to high altitudes until the gas bubble is
gone! A rapid increase in altitude can cause a dangerous
rise in eye pressure.
What are the risks of your vitrectomy
surgery?
All types of surgery have certain risks, but the
risks are less than the expected benefits to your vision.
Some of the risks of vitrectomy include:
- Infection
- Bleeding
- Retinal detachment
- Poor vision
- High pressure in the eye
- Cataract is uncommon right after surgery -
elderly patients often develop cataract over many months
How much will your vision improve?
You vision after surgery will depend on many
variables, especially if your eye disease caused permanent damage
to your retina before the vitrectomy. Your ophthalmologist
will discuss your situation with you and how much improvement in
your eyesight is possible.
Copyright 1995© American Academy of
Ophthalmology®
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