Fig 1. Rose diagrams of the frequency of points plotted along individual meridians for Goldmann and Octopus perimetry for children aged 5–6 years compared to 12–15 years.

A larger area indicates a meridian with a larger number of plotted points. *The empty sectors at 0° for Goldmann perimetry isopters III4e and I4e correspond to the ‘void’ area in the perimeter bowl.