Figure 1: Vitreal Proangiogenic and Antiangiogenic Growth Factor ratio as a function of total vitreal protein content in ND and HDD P. obesus. Solid line is the result of correlation (linear) analysis. A statistically significant relationship was found between total vitreal protein content and VEGF/PEDF ratio. The correlation coefficient (r) was 0.23. Abbreviation: ND: Natural Diet; HDD: High-protein Diet Diabetic [23].