Age-related macular degeneration (AMD)

Unfortunately, the exact causes of AMD are not yet known, but there are a number of risk factors which may increase your risk of developing the condition:

• Age: AMD develops as people get older, and is most often seen in those who are over 60, but it can develop from your forties onwards.
• Gender: AMD is more common in women than men.
• Ethnicity: White people and people of Chinese ethnicity are more likely to get AMD than other ethnic groups.
• Lifestyle: A lack of exercise and high blood pressure may increase your risk of developing AMD.
• Smoking: The risk of developing AMD is greatly increased by smoking.
• Genetics: There are certain genes which seem to be linked to some people developing AMD, but not all AMD is thought to be genetic. If you have a family history of AMD, you may be at greater risk.
• Diet: A poor diet high in saturated fats (found in foods like processed meat, butter, and cheese) can increase your risk of AMD. A healthy balanced diet with plenty of leafy greens, vegetables, fruit, nuts, and fish can reduce your risk of developing AMD or slow the progression of the disease.
• Cardiovascular disease: Diseases that affect your heart and blood vessels may increase your risk of AMD.
• Sunlight: Some researchers believe that exposure to high levels of UV light in sunlight may increase your risk of developing AMD, but this has not yet been proven.

AMD often has no symptoms until the condition is advanced and your vision is affected. As such, it is very important you have regular eye tests so AMD can be caught early and your vision preserved.

Symptoms of AMD can vary, but below are listed some of the symptoms associated with this condition. Make an appointment with your optician if you notice any of these symptoms:

• Small blurred area in the middle of your vision
• Problems with night driving
• Unable to see fine details like small text
• Distorted vision may make straight lines appear wavy or have bumps in them
• Visual hallucinations (seeing things that aren’t there)

There are two different types of Macular Degeneration: Dry AMD and Wet AMD.

Dry Macular Degeneration

With Dry AMD, your macula gradually deteriorates as the cells which make it up die off and are not replaced over time.

Dry AMD is more common than wet AMD, and develops more slowly over time (sometimes it can take years for dry AMD to reach its final stage).

Having dry AMD does not mean you have dry eyes.

Wet Macular Degeneration

Wet AMD develops when your body grows new blood vessels to try and fix cells which have stopped working properly in the macula. These abnormal blood vessels can cause leakage of fluid and/or blood, which damages the macula and leads to vision loss.

Wet AMD accounts for 10-15% of people who develop AMD, and many have had dry AMD to start with. It can develop much faster than dry AMD, and you may notice significant changes in your central vision in the space of just a few days or weeks.

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