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Wet age related macular degeneration (ARMD): lucentis D Kinshuck |
What is ARMD (age related macular degeneration) |
The retina lines the back of the eye, like the film in a camera. The macula is the area in the centre of the retina. The macula is the part of the retina is responsible for detailed vision, that is seeing faces, reading, watching TV. If the macula is damaged central vision starts to become patchy or distorted. ARMD is one of the commonest types of macular damage, and is common in older people. There are two types of ARMD, dry and wet.
ARMD does not cause blindness, but with reduced central vision life is more difficult. |
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Wet ARMD |
Wet ARMD is a condition in which blood vessels grow under the retina. They grow under the central retina, in the area is called the macula. These growing blood vessels then start to leak and cause a type of blister, like a small 'hill'. When wet ARMD develops central vision starts to become patchy or distorted or bent, after months central vision may get much worse. Before the wet ARMD develops, invisible aging changes develop over many years. |
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Wet ARMD...2 years of activity |
Without treatment the blood vessels grow and leak for an average 1-2 years. These leaky blood vessels that cause the 'blister' eventually scar. This leaces a big damaged area in the central retina, and this reduces all the central vision. During the active phase sight gets worse. But after that 1-2 years sight stailbises and usually does not get any worse. By the end of 2 years many people have lost a lot of their central vision, and cannot read etc... See animation. Treatment (eg Lucentis) is needed during the active phase, and is of no help later. Lucentis treatment may be needed for about 2 years. |
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VEGF and Lucentis (vascular endothelial growth factor) |
VEGF (vascular endothelial growth factor) is one of the main chemical 'fertilizers' that stimulates blood vessel growth and leakage. VEGF is a chemical released by damaged macular cells...these cells are damaged by the aging process. Lucentis is one of the 'anti-VEGF' drugs. It stops the blood vessels growing and leaking, by neutralising VEGF. Lucentis is the the 'anti-VEGF' drug passed by NICE, but there are others (Macugen, Avastin). (NICE is the English Government department that approves new drugs). These drugs are antibodies, and are large molecules. As they it cannot be eaten like a tablet, they have to be given by an injection into the eye. |
CNV ..the white patch enlarge |
The results of Lucentis |
Lucentis usually stops the blood vessel growth and leakage. Lucentis makes the central scar much smaller that it would have been without treatment. After 2 years treatment, patients may have lost some central vision, but they keep more sight than without the treatment. The effect is very variable. Some people retain good central vision; some most of their central vision; and some will do badly. Smokers or those with high blood pressure are likely to get the worst results.
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Dry AMRD |
There are many other types of ARMD, and most of these are dry. Lucentis has no effect on these whatsoever. These dry types or ARMD changes are essentially thinning of the central retina ...'wear and tear' as people get older. Indeed most patients with wet ARMD will have had dry ARMD changes previously. The wet changes develop as an 'extra'. Even with successful Lucentis treatment the dry changes will still progress, but these changes are extremely slow and take many years. dry ARMD...drusen |
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Results of Lucentis better with a healthy lifestyle |
To get the best results, it is
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NICE ..eligibility |
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The Lucentis treatment program |
Initially growing blood vessels stop growing for about 6 weeks after a Lucentis injection. Later the vessels may stop growing for longer. Here is an outline of the treatment program. Lucentis injections are given monthly for 3 months. Then monthly check ups are needed, and more lucentis is given each time there is some leakage |
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NICE ..results |
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Referral from Optometrists |
Referral will be accepted from optometrists finding wet ARMD, that is ARMD with fluid and haemorrhage. Patients will be seen in the rapid access macular clinic
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Low Vision Clinic |
A full Low Vision service is available at Good Hope (and most Eye Departments). Patients can be referred by the GP at any time. In addtion to specific help reading, we try and identify patients who need extra support or social contact in the community, and liase with social services, help groups, and other community support groups. The clinic is for anyone who
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Lucentis, 3 injections to start |
These are a requirement of the program because Lucentis works best if given as 3 injections. These are a month apart, with no examination in between. Antibiotic drops are prescribed before and after the procedure. |
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Lucentis,the injection |
Lucentis is given as an injection into the vitreous cavity of your eye. It is given in a clean room or an operating theatre. The injection procedure itself takes seconds and is usually feels like a tiny prick. You can go home later that day...this is a 'day case' procedure'. Good Hope, Heartlands, and Solihull patients will be treated in their respective hospital when possible. Good Hope patients in the new Treatment Centre. |
Wet macular degeneration with fluid (green) For the Lucentis injection, the eye is cleaned. Anaesthetic drops are instilled, and a few minutes later the nearly painless injection is given. The eye pressure may go up for a few hours, and extra treatment may be needed.
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Risks etc |
| Hours | The injection will put the eye pressure up for a few hours. It is therefore riskier is you have glaucoma, but this is generally not a major problem. |
| Days | About 1/1000 people will develop a serious eye infection. The day after the injection your eye should be comfortable. If your
eye starts to get red, with misty vision (there
may be no pain), perhaps 2-5 days after the injection, you should
suspect an infection and attend your eye department urgently. In Birmingham
this is the Birmingham
and Midland Eye Centre Casualty at the |
| Risks summarised | See this summary Rarely cataracts or retinal detachments may occur. |
| Anticoagulants ...extra precautions | I have no detailed advice as yet, but generally your anticoagulant dose should be reduced or carefully checked, and you should remind your ophthalmic team you use anticoagulants and ask for specific advice. |
Anticoagulents |
If patients are using anticoagulents (warfarin)
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Blepharitis |
This is a low grade infection of the eyelids (see).
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Monthly follow up clinics |
Patients are required to have check ups every month. This is a requirement of NICE and the funding Primary Care Trusts. At these visits
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a healthy OCT (F = fovea, the centre of the macula)
fluid has accumulated...more Lucentis needed enlarge |
NICE ..stopping treatment |
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Wet ARMD and the other eye |
Unfortunately age related macular degeneration can affect
the other eye. See healthy lifestyle above:
this may help. If you do notice a change in your sight, see distortion below.
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Distortion of Vision and other symptoms of ARMD |
How would you know if you have the 'neovascular' type of age related macular degeneration ? Some symptoms suggest you may be developing the problem
We advise using the Amsler Grid test to use every day, or at least once a week, at home. These authors recommend this test, although personally I have found that patients may still present late. Patients are given a grid, told to look at the central spot with their reading glasses on, using one eye at a time. If any of the adjacent lines become bent or wiggly or distorted, then CNV (blood vessels growing under the macula) may be present, and patients should see their ophthalmologist (in Birmingham attend the Eye Centre Casualty, City Hospital. Good Hope patients should contact the Rapid Access Clinic contact team). The test is explained well here . Your ophthalmologist may recommend tests such as a fluorescein angiogram. This will demonstrate any new vessels, where they are, what type they are, and what type of treatment if any will help. |
Distortion of straight lines which may start to appear crooked over a few weeks usually means the ARMD is progressing. Sometimes this is due to the 'neovascular' ARMD developing, and you are advised to be checked in case laser may help. |
The Macular Disease Society |
The main support and information group for ARMD patients is the Macular Disease Society. |
The Macular Disease Society |
More information |
See our website (google Good Hope Eye clinic and ARMD), and the links opposite. The web address of this page is in the 'footer'. Additional treatment may be needed for some patients. These include |
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Directions, contact phone numbers |
Good Hope Hospital is situated
on Rectory Road, approximately one mile from Sutton Coldfield town centre
and can be easily accessed by car or public transport. The hospital is also on bus routes: 68A, 68C, 71, 104A, 115, 168, 604,
757, 915 all
stop on Rectory Road. |
Good
Hope Hospital |
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