Pycnogenol® either alone or in combination with other antioxidants stimulates antioxidant enzyme activities in the retina of diabetic rats.
Dene, B.A., Maritime, A.C., Sanders, R.A. and Watkins III J.B. (2005)Effects of Antioxidant Treatment on Normal and Diabetic rat retinal enzyme activities.Journal of Ocular Pharmacology and Therapeutics. Vol. 21(1): 28-35
