Fig. 2.

(A) Average effects of imposed positive defocus on axial length when different parts of the visual field were covered with a gray patch: foveal patch with a radius of 3 deg (gray solid line), full-field patch with exposed 6–10 degrees annular area (black dashed line), foveal patch with a radius of 3 deg, combined with an annular patch of 6–9 deg eccentricity (bright gray dashed line), and an annular patch covering the area between 3 and 9 degrees eccentricity (dark gray dashed line). The black line represents the effect of full field defocus. (B) Average change in axial length after 20 and 40 min in control fellow eyes. Error bars denote SEMs. Significance levels ** p < 0.01, *** p < 0.001.