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Many With Diabetes Don't Realize Disease Can Harm Vision

Researchers say patient education, more proactive care could stop damage in most cases

WebMD News from HealthDay

By Dennis Thompson

HealthDay Reporter

THURSDAY, Dec. 19, 2013 (HealthDay News) -- Less than half of adults who are losing their vision to diabetes have been told by a doctor that diabetes could damage their eyesight, a new study found.

Vision loss is a common complication of diabetes, and is caused by damage that the chronic disease does to the blood vessels within the eye.

The problem can be successfully treated in nearly all cases, but Johns Hopkins researchers found that many diabetics aren't taking care of their eyes, and aren't even aware that vision loss is a potential problem.

Nearly three of every five diabetics in danger of losing their sight told the Hopkins researchers they couldn't recall a doctor describing to them the link between diabetes and vision loss.

The study appeared in the Dec. 19 online issue of the journal JAMA Ophthalmology.

About half of people with diabetes said they hadn't seen a health-care provider in the previous year. And two in five hadn't received a full eye exam with dilated pupils, the study authors noted.

"Many of them were not getting to someone to examine them for eye problems," said study leader Dr. Neil Bressler, a professor of ophthalmology at the Johns Hopkins University School of Medicine.

"That's a shame because in many of these cases you can treat this condition if you catch it in an early enough stage," added Bressler, who is also chief of the retina division at the Johns Hopkins Wilmer Eye Institute.

One-third of the people said they already had suffered some vision loss related to their diabetes, according to the report.

Bressler said vision damage can be prevented or halted in 90 percent to 95 percent of cases, but only if doctors get to patients quickly enough.

Drugs injected into the eye can reduce swelling and lower the risk of vision loss to less than 5 percent. Laser therapy has also been used to treat the condition, the researchers said.

Dr. Robert Ratner, chief scientific and medical officer for the American Diabetes Association, called the findings "frightening" and "depressing."

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