Figure 7. Quantification of the electroretinographic responses after light exposure. A: Mean amplitudes of the positive scotopic threshold response (pSTR; circles) and negative STR (nSTR; triangles; ±standard error of the mean [SEM]) obtained using different light stimuli from control (open circles and triangles) and experimental animals (closed circles and triangles) at the different periods studied: 1 (n=8), 3 (n=8), 7 (n=16), 14 (n=12), 30 (n=13), 90 (n=10), and 180 days (n=10) after light exposure (ALE). The STR waves are affected by light exposure, but recover almost completely by 14 days ALE. B: Mean amplitudes of the a- (circles) and b- (triangles) waves (±SEM) obtained using different light stimuli from control (open circles and triangles) and experimental animals (closed circles and triangles) at the different periods studied (same as in A). The a- and b- waves are affected by light exposure, and while the a-wave is reduced at all times points, at 90 and 180 days ALE the b- wave is similar to control values, except for the highest intensity stimulus (2.03 log). C, D: Percentage of electroretinographic (ERG) waves considered 100% of their control values at the different analyzed time points C: pSTR (black bars) and nSTR (gray bars) waves. D: a- (black bars) and b- (gray bars) waves. Asterisks: statistically significant compared to control values (Kruskal–Wallis test, p≤0.05)