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Study Shows Pine Bark Improves Microcirculation, Retinal Swelling And Visual Acuity In Early Diabetic Retinopathy
Date:12/2/2009

emain largely reversible.

Subjects were treated with three 50 mg Pycnogenol® tablets (total 150 mg. of Pycnogenol®) or placebo tablets in the morning after breakfast over a period of three months. Following treatment with Pycnogenol®, the major positive observation of this study was visual improvement, which was subjectively perceived by 18 out of 24 patients in the Pycnogenol® group. Testing of visual acuity using the Snellen Chart (the standard eye chart used by eye care professionals to measure visual acuity) showed a significant improvement from baseline 14/20 to 17/20 after two months of treatment with Pycnogenol®. There were no improvements found in the control group.

The retina is considered swollen when the diameter of the macula exceeds 500 micro meters and treatment with Pycnogenol® significantly decreased the swellings below that level, as judged by the high resolution ultrasound imaging used in the study. Furthermore, the blood flow velocity in capillaries nourishing the light sensing cells improved. The authors suggest that both effects account for the improved vision of patients. In the control group, retinal edema was not relieved, blood flow velocity remained unaffected and no visual improvements occurred.

In contrast, all 22 subjects in the control group maintained the same diabetic macular swellings as they were diagnosed with at the beginning of the study.

"Pycnogenol® has been intensively investigated for decades to stop the progression of diabetic retinopathy and help patients to maintain their remaining eye sight," said Dr. Steigerwalt. "Our study suggests that Pycnogenol® taken in the early stages of retinopathy may enhance retinal blood circulation accompanied by a regression of edema, which favorably improves vision of patients. Pycnogenol® may be particularly beneficial for preventing this complication in diabetic patients, based on the la
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SOURCE Natural Health Science Inc.
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