Figure 4.

A. Daily refractions of the animals that wore binocular +4 D lenses continuously from 11 to 45 days of VE. The figure is modified from Siegwart & Norton.³² B. Vitreous chamber depth for four of the five animals, compared with normal animals.² During the age range studied, the normal vitreous chamber depth is decreasing because the overall axial length increases more slowly than the increase in lens thickness. When measured at 45 days of VE, after the eyes had compensated for the +4 D lenses, the vitreous chamber was shorter than normal, indicating plus-lens wear had slowed overall axial elongation. When measured after the plus lenses had been removed for 25 days, and the eyes had compensated for the hyperopic shift produced by removing the lenses, vitreous chamber depth had increased to nearly a normal value. A color version of this figure is available online at www.optvissci.com.