Figure 3

Effect of increasing extracellular K + on lens electrical potential. A: Equatorial plots of lens voltage (Em) versus radial distance (r/a) showing the electrical potential gradients extracted from the model for three different extracellular K + concentrations (● = 8; ■ = 58; and ▲ = 108 mM [K+]eo). B: Plot showing the effect of changing the extracellular K + concentration ([K+]eo) on the lens potential measured experimentally by microelectrodes located in the outer cortex (▲) and values obtained from the model (■) as an average of the equatorial electrical gradients shown in A.