Fig. 6. Effect of hyperoxia on the dimensions of the organelle-free zone (OFZ). (A) The equatorial width of the OFZ is decreased by hyperoxia (open circles). (B) Hyperoxia caused a consistent decrease in the area of the OFZ compared with normoxic controls (filled circles). (C) For each lens slice, the fractional area occupied by the OFZ was calculated. In hyperoxic lenses, a significantly smaller fraction of the lens slice area was occupied by the OFZ.