Figure 1
From: Disparity between central and peripheral refraction inheritance in twins

Variance components (ACE model) of objective refractive error, estimated by SEM analyses, across the horizontal retina. 0° represent the position corresponding to the fovea; negative values indicate temporal retina, and positive values indicate nasal retina. Lines represent non-standardized estimates of additive genetic (blue), shared environmental (red), non-shared environmental (green), and total phenotypic (black) variance. The Grey area represents the area affected by the optic disk.