Fig. 2

Changes in orbital volume as a function of age for the various subgroups and replications. Age 12 is the baseline year. A Simple Average vs. Index (pooling males and females, right and left orbits). B Simple average vs. index, females only (pooling right and left orbits). C Simple average vs. index, males only (pooling right and left orbits). D Index. Males and females only (pooling right and left orbits). E Bland-Altman plot showing the differences in repeat volume measurements on 30 orbits by a single operator. F Bland-Altman plot showing the differences in volume measurements on 30 orbits by two operators