Macular Degeneration


Who Am I? I am four times more prevalent than Dementia and more than half that of Diabetes...


...I affect 1 in 7 people over 50...

Almost 1.2 million Australians over 50 have some evidence of macular degeneration, making it Australia’s leading cause of severe vision loss and blindness. Without appropriate prevention and treatment measures, this number is set to increase to 1.7 million by 2030!

WHAT is MACULAR DEGENERATION?

Macular degeneration is the leading cause of blindness in Australia. It is a progressive, degenerative disease that affects the macula- an area of the retina (the light-sensitive layer of the eye) which gives us our fine-detailed, central vision.


There are two types of macular degeneration:

  • Dry/non-proliferative macular degeneration affects approximately 90% of macular degeneration sufferers. Waste deposits (known as exudate) cause a distortion in central vision. This is early onset Macular Degeneration.

  • Wet/proliferative macular degeneration affects approximately 10% of macular degeneration sufferers. This is a more advanced stage of MD, where new, fragile blood vessels grow in the macula region. These fragile blood vessels may then leak, causing blood to enter the retina and scar tissue to form. If this proliferative stage is left untreated, eventually a complete loss of vision will occur.

WHAT causes MACULAR DEGENERATION?

The exact cause of macular degeneration is still unknown. However, certain risk factors have been identified. These include:

Smoking: Smokers are three to four times more likely to develop MD than non-smokers.

Age: MD affects 1 in 7 Australians over the age of 50- that's almost 1.2 million Australians!

General Health: Cardiovascular disease and hypertension increase the risk of developing MD

Family history of MD

Extended sun exposure over many years

If you have any of the above risk factors, it is important to mention it to your optometrist. At Optometrist Parramatta, your experienced optometrist will screen you for macular degeneration.

how does MACULAr DEGENERATION affect my eyes?

Macular Degeneration causes a progressive loss in central vision. As such, tasks requiring good central vision such as driving and reading will be affected, regardless of whether or not you are wearing corrective glasses or contact lenses. Furthermore, objects with straight edges such as doorways may look bent or distorted and colours may appear faded.


how do i know if i have macular degeneration?

Often sufferers are unaware they have macular degeneration until they notice changes to their vision. As it is a progressive, degenerative condition that cannot be reversed, the best treatment is keeping up with your regular eye exams, as your optometrist may detect minor changes before you experience any symptoms. At Optometrist Parramatta, the full health check of the eye is done during our 360° Comprehensive Exam, which you can

Book Here. While this is recommended every three years in conjunction with yearly check-ups, any changes in your vision means you are eligible to bring this exam forward.

Your optometrist will screen you for macular degeneration via a number of tests.


Assessment of vision and examination of the macula are two tests which help detect macular degeneration.

Furthermore, the use of a grid pattern known as an Amsler Grid can help to detect early vision distortion caused by macular degeneration, pictured left.

For those in higher risk categories such as smokers, those over 50 or who have a family history of MD, the Amsler Grid can be used at home to self-monitor for changes in vision between appointments. You can find this grid above, by doing a quick google search, or we are happy to send you or someone you believe would benefit from one a grid via post- just contact us via email here, or call us on (02) 98912020.

If macular degeneration is detected, your optometrist may refer you to an ophthalmologist for additional testing.

can macula degeneration be treated?

As yet, there is no cure for macular degeneration. In the case of wet macular degeneration, various laser or injection treatments aim to seal the leaking blood vessels and prevent new vessels forming. However, once vision is lost it cannot be restored- which is what makes it a leading cause of blindness in Australia, and why is it so important to monitor for changes to your vision. The earlier MD is detected and treated, the more vision you are likely to retain.

Research into the effective treatment of macular degeneration is ongoing.

For more information visit the Macular Degeneration Foundation at http://www.mdfoundation.com.au/page122150.aspx.

Remember, if you notice any sudden changes in your vision it is essential to seek medical attention immediately. The “wet” form of macular degeneration can progress very quickly and requires rapid treatment to save sight. An Amsler grid can also be used to self-monitor for changes in vision between appointments and is available free from Optometrist Parramatta.

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