Diagnosis of Macular Degeneration
Your health care provider will ask about your symptoms and
medical history and perform a physical exam. Your health care provider may suspect adult
macular degeneration if you are over the age of 50 and have changes in your central
vision. You will probably be referred to an eye care professional, such as an
opthamologist or optometrist, who will look for signs of macular degeneration.
Eye Evaluation for Macular Degeneration:
Visual Acuity Test - This eye chart test measures how well you see at various distances.
Pupil Dilation - Eye drops will
be placed in your eyes to dilate, or enlarge, your pupils. This way, your eye care
professional can view the back of your eye. One of the most common early signs of
adult macular degeneration is the presence of drusen-tiny yellow deposits in the
retina. Your eye care professional can see them during an eye examination. The
presence of drusen alone does not indicate disease, but it might mean that the eye is
at risk for developing more severe adult macular degeneration. After the examination,
your vision may remain blurred for several hours due to the dilating drops.
Amsler Grid - You may be asked
to view an Amsler grid, a pattern that looks like a checkerboard. You will be asked to
cover one eye and stare at a black dot in the center of the grid. While staring at the
dot, you may notice that the straight lines in the pattern appear wavy to you. You may
notice that some of the lines are missing. These may be signs of macular degeneration.
Fluorescein Angiography - If your
eye care professional suspects you have wet macular degeneration, you may need to have a
test called fluorescein angiography. In this test, a special dye is injected into a vein
in your arm. Pictures are then taken as the dye passes through the blood vessels in the
retina. The photos help your eye care professional evaluate leaking blood vessels to
determine whether they can be treated.
SOURCES:
Macular Degeneration Foundation.
National Eye Institute.
Last reviewed October 2004 by Marc Ellman, MD
All EBSCO Publishing proprietary, consumer health and
medical information found on this site is accredited by URAC. URAC's Health Web Site Accreditation Program
requires compliance with 53 rigorous standards of quality and accountability, verified
by independent audits.