1. Scharrer A, Ober M. Anthocyanosides in the treatment of retinopathies. Klin Monatsblatt Augenheilk 1981;178:386–9.
2. Perossini M, Guidi G, Chiellini S, Siravo D. Diabetic and hypertensive retinopathy therapy with Vaccinium myrtillus anthocyanosides (Tegens®): Double-blind, placebo-controlled clinical trial. Ann Ottalmol Clin Ocul 1987;113:1173-7 [in Italian].
3. Fromantin M. Procyanidolic oligomers in the treatment of fragile capillaries and diabetic retinopathy. Med Int 1981;16:432-4 [in French].
4. Verin MM, Vildy A, Maurin JF. Retinopathies and OPC. Bordeaux Medicale 1978;11:1467-74 [in French].
5. Arne JL. Contribution to the study of procyanidolic oligomeres: Endotelon in diabetic retinopathy (in regard to 30 observations). Gaz Med de France 1982;89:3610–4 [in French].
6. Varma SD. Inhibition of aldose reductase by flavonoids: Possible attenuation of diabetic complications. Progr Clin Biol Res 1986;213:343-58.
7. Glacet-Bernard A, Coscas G, Chabanel A, et al. A randomized, double-masked study on the treatment of retinal vein occlusion with troxerutin. Am J Ophthalmol 1994;118:421-9.
8. Lanthony P, Cosson JP. The course of color vision in early diabetic retinopathy treated with Ginkgo biloba extract. A preliminary double-blind versus placebo study. J Fr Ophtalmol 1988;11:671-4 [in French].
9. Jialal I, Joubert SM. The biochemical profile in Indian patients with non-insulin-dependent diabetes in the young with retinopathy. Diabetes Metabol 1985;11:262-5.
10. McNair P, Christiansen C, Madsbad S, et al. Hypomagnesemia, a risk factor in diabetic retinopathy. Diabetes 1978;27:1075-8.
11. Erasmus RT, Olukoga AO, Alanamu RA, et al. Plasma magnesium and retinopathy in black African diabetics. Trop Geogr Med 1989;41:234-7.
12. Brooser G, Anda L, Doman J. Preliminary report on the use of ethyl apovincaminate in affections of the eyeground. Arzneimittelforschung 1976;26:1973-5.
13. Kornerup T, Strom L. Vitamin B12 and retinopathy in juvenile diabetics. Acta Paediatr 1958:47:646-51.
14. Alieva ZA, Gadzhiev RV, Sultanov M. Possible role of the antioxidant system of the vitreous body in delaying the development of diabetic retinopathy. Oftalmol Zh 1985;(3):142-5 [in Russian].
15. Johnson L, Quinn GE, Abbasi S, et al. Effect of sustained pharmacological vitamin E levels on incidence and severity of retinopathy of prematurity: A controlled clinical trial. J Pediatr 1989;114:827-38.
16. Raju TN, Langenberg P, Bhutani V, Quinn GE. Vitamin E prophylaxis to reduce retinopathy of prematurity: a reappraisal of published trials. J Pediatr 1997;131:844-50.
17. Hittner HM, Godio LB, Rudoph AJ, et al. Retrolental fibroplasia: efficacy of vitamin E in a double-blind clinical study of preterm infants. N Engl J Med 1981;305:1365-71.
18. Runge P, Muller DP, McAllister J, et al. Oral vitamin E supplements can prevent the retinopathy of abetalipoproteinaemia. Br J Ophthalmol 1986;70:166-73.
19. De Hoff JB, Ozazewski J. Alpha tocopherol to treat diabetic retinopathy. Am J Ophthalmol 1954;37:581-2.
20. Bursell S-E, Schlossman DK, Clermont AC, et al. High-dose vitamin E supplementation normalizes retinal blood flow and creatinine clearance in patients with type 1 diabetes. Diabetes Care 1999;22:1245-51.
21. Crary EJ, McCarty MF. Potential clinical applications for high-dose nutritional antioxidants. Med Hypotheses 1984;13:77-98.
22. Anonymous. Retinopathic effect of sucrose-rich diets due to fructose. Nutr Rev 1982;40:117-8,128.
23. Gaby AR. Fructose, glycosylation, and aging. Townsend Letter for Doctors and Patients 1999;Apr:107-8.
24. Paetkau ME, Boyd TAS, Winship B, Grace M. Cigarette smoking and diabetic retinopathy. Diabetes 1977;26:46-9.
25. McCance DR, Hadden DR, Atkinson AB, et al. Long-term glycaemic control and diabetic retinopathy. Lancet 1989;2:824-8.