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Intravitreal Injection of Lucentis / Avastin /Eyelea / Ozurdex

Intravitreal Injection of Lucentis / Avastin /Eyelea / Ozurdex

Patients with certain conditions can lose central vision when abnormal blood vessels bleed under the retina at the back of the eye. A series of injections of antiVEGF medicines are given into the back of your eye to stop these blood vessels growing and help control the leaking blood. This is the most effective way of getting high concentrations of medicine into the eye.

There are several different eye diseases that are treated in this way including:
Wet macular degeneration
• Diabetic maculopathy
• Retinal vein occlusions
• Other retinal diseases.

What medicine is used in intravitreal injections?
Many different types of medicines can be injected into the vitreous. Examples include:
• Ranibizumab (Lucentis): used for wet macular degeneration
• Bevacizumab (Avastin): Off-label use in wet macular degeneration, diabetic maculopathy and retinal vein occlusions
• Triamcinolone: used in diabetic maculopathy, post-operative cystoid macular oedema and inflammatory eye diseases
• Antibiotics: used in severe infections of the eye.
• Ozurdex – (Sustained release steroids )Used for severe cases of macular edema

Why are lucentis and bevacizumab used in wet macular degeneration ?
Without treatment, patients with wet macular degeneration have an extremely high chance of losing vision. Research has shown that patients who are regularly treated with either aflibercept, lucentis or bevacizumab injections into the eye maintain (or sometimes gain) vision.
These medications stop the leakage and haemorrhage associated with the growth of the abnormal blood vessel, which is the primary cause of ‘wet’ macular degeneration.

How often do I need treatment?
For patients with wet macular degeneration , treatment is required every 4 weeks until the macular degeneration is brought under control. Then, the treatment interval may be slowly increased. Usually patients are able to be maintained on treatment every 8-12 weeks. Occasionally patients with particularly aggressive disease, or if they are being treated in their only good eye, will need treatment more frequently.

How long do I need treatment for?
This depends on the disease which is being treated. For wet macular degeneration, it is most likely that you will be treated forever. If treatment is ceased, it is possible that you will have recurrence of the wet macular degeneration, which can result in severe haemorrhage resulting in permanent loss of vision.
In some other diseases, treatment may be ceased after 1-2 years in some cases.
Researchers are currently investigating medications that last longer in the eye, reducing the burden of treatment in the future.

Will I feel the injection?
You shouldn’t feel any pain during the injection, but you may feel some pressure. The vast majority of patients tolerate the injections very well.
At Northern Eye Surgeons, our procedure is to use local anaesthetic drops as well as a local anaesthetic injection. The anaesthetic injection doesn’t hurt as the skin has already been numbed by the drops.

What happens after the injection?
You can leave straight away, but as you will have a pad on your eye for 1 hour, we recommend that you have someone to take you home. It is common to have a gritty eye for up to 24 hours after the injection and some bleeding around the injection site. Your vision will be slightly blurry, so we recommend that you don’t go to work after your injection.

What are the potential complications of an intravitreal injection?
Intravitreal injections are considered safe procedures, however as with all procedures there are some risks.
Severe complications are rare, and include:
• infection
• retinal detachment
• cataract.
It is rare to lose vision as a result of an intravitreal injection. But if you do develop severe pain, redness or blurred vision, then we recommend that you call our clinic or your nearest major hospital immediately.

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