The
retina is the tissue that lines the back of the eye. It sends visual
signals to the brain. The macula is part of the retina. It is
responsible for central vision. Macular degeneration is decline of the
macula. It causes a gradual loss of sharp, central vision. The condition
is mainly a disease of aging. In rare cases, it can occur in younger
people.
Age-related
macular degeneration (AMD) affects the older generation and is one of
the most common eye conditions in elderly people. It damages the yellow,
oval macular of the eye (which allows you to see fine details) and can
result in a complete loss of central vision. There are two main types of
this eye disease, so let's find out more about each ailment.
The 'dry' type
The 'dry' type of age-related macular degeneration occurs when light-sensitive cells in the macular fail to work properly and can greatly affect vision. As the retinal pigment epithelial cells (RPE) which support the light sensitive photoreceptor cells break down, a loss of central vision can occur. This type of AMD usually develops over many years and tends to affect 80 per cent of those with the condition.
Many patients with the dry type of age-related macular degeneration will find that their vision deteriorates slowly. Symptoms may not be obvious in the early stages but central vision usually gets worse with time. Sufferers can find it hard to read small print or watch TV and might need more light to see objects clearly. As the condition progresses, a blind spot can develop in the middle of each eye, however, peripheral vision is rarely affected.
Both eyes are usually affected at the same time, but it is possible for one eye to be worse than the other, so discuss any abnormalities with your optometrist. An eye care specialist will look out for small, yellowish deposits known as drusen (which are an early sign of this disease) and will refer you to the hospital if they are worried. There is no cure for dry AMD; however, magnifying glasses and electronic devices can help you live your life to the full.
The 'wet' type
The 'wet' type of age-related macular degeneration occurs when new blood vessels on the retina leak very suddenly and can cause severe damage to your eyesight. It's a lot more serious than dry AMD and must be treated as a medical emergency. Always seek help if you experience sudden or gradual loss of your eyesight and don't put up with any pain or discomfort.
Your optometrist will use a special book to look for distortion of your central vision and will examine your retina (a collection of sensitive cells at the back of your eye). If they notice a problem you'll probably be referred to an eye care hospital where you'll receive professional help. Laser treatments can stop the vessels from leaking and innovative new injections can prevent your vision form worsening.
The 'dry' type
The 'dry' type of age-related macular degeneration occurs when light-sensitive cells in the macular fail to work properly and can greatly affect vision. As the retinal pigment epithelial cells (RPE) which support the light sensitive photoreceptor cells break down, a loss of central vision can occur. This type of AMD usually develops over many years and tends to affect 80 per cent of those with the condition.
Many patients with the dry type of age-related macular degeneration will find that their vision deteriorates slowly. Symptoms may not be obvious in the early stages but central vision usually gets worse with time. Sufferers can find it hard to read small print or watch TV and might need more light to see objects clearly. As the condition progresses, a blind spot can develop in the middle of each eye, however, peripheral vision is rarely affected.
Both eyes are usually affected at the same time, but it is possible for one eye to be worse than the other, so discuss any abnormalities with your optometrist. An eye care specialist will look out for small, yellowish deposits known as drusen (which are an early sign of this disease) and will refer you to the hospital if they are worried. There is no cure for dry AMD; however, magnifying glasses and electronic devices can help you live your life to the full.
The 'wet' type
The 'wet' type of age-related macular degeneration occurs when new blood vessels on the retina leak very suddenly and can cause severe damage to your eyesight. It's a lot more serious than dry AMD and must be treated as a medical emergency. Always seek help if you experience sudden or gradual loss of your eyesight and don't put up with any pain or discomfort.
Your optometrist will use a special book to look for distortion of your central vision and will examine your retina (a collection of sensitive cells at the back of your eye). If they notice a problem you'll probably be referred to an eye care hospital where you'll receive professional help. Laser treatments can stop the vessels from leaking and innovative new injections can prevent your vision form worsening.
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