-- Robert Preidt
MONDAY, Oct. 11 (HealthDay News) -- The number of older
Americans undergoing treatment for retinal conditions such as
age-related macular degeneration (AMD) and diabetic retinopathy
nearly doubled between 1997 and 2007, with a significant shift in
the types of procedures being performed, a new study has found.
Age-related macular degeneration is a progressive disease of the
retina that causes the loss of central vision, and 40 percent of
people with diabetes have some form of diabetic retinopathy, a
condition in which blood vessels stop feeding the retina properly,
according to the American Foundation for the Blind. Both conditions
can cause vision loss and blindness.
The researchers analyzed Medicare data from 1997 to 2007 and
found that the number of retinal procedures increased 192 percent
during that period. The largest year-to-year increase (20 percent)
occurred between 2006 and 2007, according to the study published in
the October issue of the journal
Archives of Ophthalmology.
The largest increase in volume was seen in treatments for
neovascular, or "wet," AMD. New treatments for this condition
include intravitreal therapy -- drug injections directly into the
eye -- of antibodies that block the formation of new blood vessels.
Between 1997 and 2001, fewer than 5,000 such injections were
performed each year, but rates more than doubled each year through
2006. In 2007, there were 812,413 such injections, the study
authors noted in a news release from the journal's publisher.
The use of photodynamic therapy -- a laser treatment for
neovascular AMD -- peaked at 133,565 procedures in 2004 and then
decreased 83 percent to 22,675 procedures in 2007. Laser treatment
of potentially cancerous eye tumors and the "wet" form of AMD
decreased from a peak of 82,089 in 1999 to 13,821 in 2007 (another
83 percent decrease), the researchers found.
Among the other findings:
"Retinal disease is highly prevalent among older individuals, and both age-related macular degeneration and diabetic retinopathy account for more than half the irreversible blindness in older Americans. The prevalence of both macular degeneration and diabetic retinopathy increases with age, and the number of Americans affected by these conditions is expected to increase substantially as the number of Americans older than 65 years doubles from 2010 to 2040," study author Dr. Pradeep Ramulu, of Wilmer Eye Institute at Johns Hopkins University in Baltimore, and colleagues wrote in the article.
The U.S. National Eye Institute has more about
age-related macular degeneration.
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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