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Macular Degeneration
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EXPERIENCED, CARING CONSULTANT-LED EYE CARE

Macular Degeneration

Macular degeneration (MD) is a condition which affects the macula which is a small area at the centre of the retina.

The macula is responsible for what we see straight in front of us, allowing us to see fine detail for activities such as reading and writing, as well as our ability to see colour.

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What is age-related macular degeneration?

Vision can be severely affected if the cells of the macula are damaged and stop working – this is known as age-related macular degeneration (AMD). Symptoms include blurred vision or distortion (with straight lines appearing wavy and objects appearing to be an unusual size or shape). In more advanced cases, sufferers develop a blank patch or dark spot in the centre of their sight which makes reading, writing and recognising some objects difficult.
Age-related macular degeneration (AMD) is a common condition affecting older people. About one in 100 people aged 65-75, and about one in eight people aged over 85 have AMD that is severe enough to cause serious visual loss*.

There are two types of AMD, dry macular degeneration and wet macular degeneration. “Wet” macular degeneration is caused by the growth of abnormal blood vessels within the retina, leading to a build-up of fluid, bleeding and scarring. Wet AMD can cause serious visual loss in a much shorter space of time than dry AMD, sometimes within a few months

Wet AMD

The most common and effective treatment for wet Age-related macular degeneration is known as anti-VEGF (vascular endothelial growth factor) theory.

This is an injection of a drug into the eye that controls the build-up of fluid under the retina. In normal patients, VEGF is a healthy molecule which promotes the growth of blood vessels, however, when the VEGF works less effectively, new blood vessels in the choroid layer (behind the retina) are weaker and so leak into the retinal layers.

The anti-VEGF injections prevent new (weak) blood vessels from forming behind the retina so there are no weak blood vessels to leak and cause the symptoms of wet AMD.

The injections are not a cure for AMD but they may stop it from getting worse and in some cases, may improve sight providing treatment is started at an early stage.
The injections are usually carried out as a day-case or out-patient procedure, with no overnight stay in hospital. They are usually performed under local anaesthesia, which means that you will be awake during the procedure. Your consultant will discuss the benefits and associated risks of injections for wet AMD together with any alternatives to the treatment..

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Patient journey

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When you arrive

Before the injection you will be given local anaesthetic eye drops and the area around your eye will be cleaned with an antiseptic. Once the anaesthetic has taken affect, your consultant will inject the drug through the wall of the eye.
The injection takes a few minutes and you will usually be able to go home about an hour later.
You may need regular repeat injections for the treatment to be successful – please ask your consultant for further advice.

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What happens after

Injection for wet AMD is a relatively new treatment. Like all medical procedures, there are risks as well as benefits. Although a rise in pressure within the eye is expected immediately after the injection, occasionally an incision is required to release fluid from the eye if the pressure is too great.

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After care

In rare cases the inside of the eye can become infected. This can be serious and can lead to permanent loss of vision – antibiotic eye drops are used to reduce the risk of infection. Also in rare cases, the retina can become detached, which may require surgery. The chance of complications depends on the exact type of injection you are having and other factors such as your general health. Your consultant will advise how any risks apply to you.

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