Figure 4.

Averaged 2D maps of relative peripheral refraction (RPR) in different level of myopia (data from right eyes of 68 subjects). The positive and negative values in the x-axis indicate the nasal retina (“N”) and temporal retina (“T”), respectively. For the y-axis, positive values represent the superior retina and negative values represent the inferior retina. The color-code is in diopters. A zone with a white circle represents no statistical difference with the center, with a red star a statistically significant hyperopic difference, with a blue star a statistically significant myopic difference (*P < 0.05, **P < 0.01).