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Tricort
Injections : Information for Patients |
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Intravitreal injection of Kenalog/Tricort
™
(triamcinolone
acetonide)
Information for patients
Introduction:
Your eye doctor (ophthalmologist) has diagnosed you with an
eye condition that causes:
• swelling (oedema or inflammation)
• leakage from the blood vessels in the eye, and/or
• the abnormal growth of blood vessels
What is Kenalog™
and its benefits?
Kenalog™
(triamcinolone acetonide) is a steroid injected
into the jelly or vitreous portion of the eye; we will refer
to this type of injection of this drug as IVTA. IVTA reduces
the swelling, leakage, and abnormal blood vessel growth, and
may improve how well you see.
What is “Off-label” status?
Kenalog™
(triamcinolone acetonide) is licensed to treat the
swelling caused by many medical conditions. According to the
manufacturer, it can be injected into a muscle, the skin, or
a joint. Once a medication is licensed for use, physicians
may use it “off-label” for other purposes if it will benefit
their patient. Before doing so, they are expected to know
the medication well and have sound medical evidence for its
use.
Although the drug is not licensed to treat eye conditions,
eye doctors have been injecting this medication in and
around the eye for over 30 years, since studies have shown
that it helps treat eye conditions like yours. There are
some serious risks from this type of injection and from the
medication itself. The manufacturer has warned doctors about
these risks, and to recommend that they not inject them into
and around the eye. Despite these known risks and the
manufacturer’s warning, it is felt reasonable by most eye
doctors to continue to inject it for eye conditions. Your
eye doctor feels that this medication is the right one for
your condition at this time. Injecting it in your eye
instead of giving it as a pill or drops helps to minimize
the side effects and maximize the benefits.
What are the limitations with this treatment?
The goal of treatment is to prevent further loss of vision.
Although some patients have regained vision, the medication
may not restore vision that has already been lost, and may
not ultimately prevent further loss of vision caused by your
disease.
How is this treatment carried out?
After the pupil is dilated and the eye is numbed with local
anesthesia, the medication is injected into the vitreous
(the jelly-like substance in the back part of the eye). IVTA
is given by an injection into your eye as needed. Your eye
doctor will tell you how often you will receive the
injection, and for how long.
Are there any alternatives to this treatment?
You do not have to receive IVTA treatment for your
condition, although without treatment, diseases like yours
can lead to further vision loss and blindness, sometimes
very quickly. Your eye doctor will let you know if other
medications are available for your condition, whether laser
or other types of surgery are the only alternatives, and
whether these treatments have already been tried but have
not helped your condition.
What are the complications from the medication and
injection?
Your condition may not get better or it may become worse.
Any or all of the complications discussed below may cause
you to lose vision or cause blindness. Additional
medications or procedures, including surgery, may be needed
to treat these complications. During the follow up visits or
phone calls, you will be checked for possible side effects
and the results will be discussed with you.
Possible complications and side effects of IVTA include but
are not limited to:
• retinal detachment,
• cataract formation (clouding of the lens of the eye)
• glaucoma (increased pressure in the eye)
• hypotony (reduced pressure in the eye)
• damage to the retina or cornea (structures of the eye)
• bleeding
There is also the possibility of an eye infection (endophthalmitis).
You may receive eye drops with instructions on when to use
them to reduce the possibility of this occurring. Any of
these rare complications may lead to severe, permanent loss
of vision.
Patients receiving IVTA may experience less severe side
effects related to the pre-injection preparation procedure
(eyelid speculum, anesthetic drops, dilating drops,
antibiotic drops, povidone-iodine drops and the injection of
the anesthetic). These side effects may include:
• eye pain
• subconjunctival hemorrhage (bloodshot eye)
• vitreous floaters
• irregularity or swelling of the cornea
• inflammation of the eye
• visual disturbances
If you have any queries or concerns about this treatment
please speak to your eye doctor.
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