Related Macular Degeneration
What is age-related macular
Age-related macular degeneration (AMD) is a disease that
blurs the sharp, central vision you need for
“straight-ahead” activities such as reading, sewing, and
driving. AMD affects the macula, the part of the eye
that allows you to see fine detail. (See diagram below.)
AMD causes no pain.
In some cases, AMD advances so slowly that people notice
little change in their vision. In others, the disease
progresses faster and may lead to a loss of vision in
both eyes. AMD is a leading cause of vision loss in
Americans 60 years of age and older.
Where is the macula?
The macula is located in the center of the retina, the
light-sensitive tissue at the back of the eye. The
retina instantly converts light, or an image, into
electrical impulses, then sends these impulses, or nerve
signals, to the brain.
there different forms of AMD?
AMD occurs in two forms: wet and dry.
What is wet AMD?
Wet AMD occurs when abnormal blood vessels behind the
retina start to grow under the macula. These new blood
vessels tend to be very fragile and often leak blood and
fluid. The blood and fluid raise the macula from its
normal place at the back of the eye. Damage to the
macula occurs rapidly. With wet AMD, loss of central
vision can occur quickly. Wet AMD is considered to be
advanced AMD and is more severe than the dry form.
An early symptom of wet AMD is that straight lines
appear wavy. If you notice this condition or other
changes to your vision, contact your eye care
professional at once. You need a comprehensive dilated
What is dry AMD?
Dry AMD occurs when the light-sensitive cells in the
macula slowly break down, gradually blurring central
vision in the affected eye. As dry AMD gets worse, you
may see a blurred spot in the center of your vision.
Over time, as less of the macula functions, central
vision in the affected eye can be lost gradually.
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