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Health
Increase ∈ diabetes brings a spike ∈ related eye disease
Blood vessels can leak into the retina
By Nanci Hellmich
USA Today
The nation‟s rising level of diabetes is driving another health problem: a significant jump ∈ adults with vision problems from a related condition called diabetic retinopathy.
From 2000 and 2010, there was an 89% increase ∈ the number of people with diabetic retinopathy, which affects the tiny blood vessels of the retina. The most severe forms can impair vision if not treated. About 7.7 million people ages 40 and older have diabetic retinopathy, the new estimates say.
The numbers emerge from an analysis, out today, by a group of researchers and sponsored by Prevent Blindness America and the National Eye Institute.
“The number we are most alarmed about is the increase ∈ diabetic retinopathy, which is largely due to the diabetes epidemic,” says Jeff Todd, chief operating officer of
Prevent Blindness America.
Almost 26 million people ∈ the USA have diabetes, the Centers for Disease Control and Prevention says. In diabetic retinopathy, high blood sugar causes small blood vessels to swell and leak into the retina, blurring vision and sometimes leading to blindness. A government study ∈2008 found that about 4.2 million adults had the disease, the leading cause of blindness ∈ adults.
“You can treat and stop progression,” says Beatriz Muñoz, an associate professor of ophthalmology at the Wilmer Eye Institute at Johns Hopkins School of Medicine ∈Baltimore. But the disease can be “asymptomatic,” or without symptoms: “You may not know you have it,” she says, “So it‟s important to have regular eye exams.”
The vision analysis found that overall, the number of people over 40 with vision impairment and blindness has increased 23% ∈ the past decade, partly because of more people with eye conditions such as cataracts.
Vision impairment is defined as having worse than 20/40 vision ∈ the better eye even with glasses. In the USA, people are typically considered blind with vision of 20/200 or worse ∈ their best eye.
If the trend remains the same, about 13 million ∈ the USA will have visual impairment or be blind by 2050, the report says. “The increase we‟re seeing ∈ eye diseases mirrors the increase ∈ the aging population,” Todd says.
Estimates for eye conditions:
• 24.3 million people 40 and older have cataracts, a 19% jump from 2000. A cataract is a clouding of the eye‟s clear lens that appears with age. Surgery is effective ∈ restoring vision. Muñoz says, but “there is no clear way to prevent it.”
• 2.7 million people ages 40 and older have open−∠ glaucoma, the most common form of the disease, up 22%. Glaucoma causes damage to the optic nerve. Treatments can slow progression, she says.
• 2.1 million people ages 50 and older have late age-related macular degeneration, a 25% increase from 2000. Late AMD is the most severe form, and treatments can slow progression and prevent vision loss for some of the forms, Muñoz says.
USA Today, Wednesday, June 20, 2012, p. 6D.
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