Clinical research has shown that high OPC pine bark extract may improve distance vision and slow down the decline of eye function with age.
In a study conducted on eye function in elderly rest-home residents by Rachel March and Dr. Nigel Gilchrist of the Christchurch Geriatric Medical Research Trust at the Princess Margaret Hospital, Christchurch, New Zealand, the effects of high OPC pine bark extract showed a measurable improvement. Specifically, the double-blind, controlled study on 60 participants with an average age of 82 years revealed:
- High OPC pine bark was very well tolerated with no treatment-related adverse reactions.
- Subjects maintained normal laboratory measures of all biochemical and hematological parameters.
- Distant vision improved significantly (p=0.028) over the controls.
- Fewer people taking the high OPC pine bark extract experienced deterioration
- More people taking the high OPC pine bark extract experienced stable and improved vision.
- Acuity of vision, a combined measure of near and distant vision declined five times faster in the control group compared to the high OPC pine bark extract group over the 6 months trial period (p=0.079).
- Distant vision and acuity of those taking the high OPC pine bark extract were five times less likely to deteriorate over the clinical trial period.