Correlations between densities of the single cones.

<p>Each data point is the average density (thousands of cells/mm²) for an individual (pooled eyes) for that type of cone. (a) LWS (red triangles), MWS (yellow circles), and SWS (blue diamonds) versus UVS densities; (b) MWS and LWS versus SWS densities; (c) LWS versus MWS densities. Pearson correlations, n = 26; LWS-MWS r = 0.70, <i>P</i><0.001; LWS-SWS r = 0.46, <i>P</i> = 0.02; LWS-UVS r = 0.55, <i>P</i> = 0.003; MWS-SWS r = 0.71, <i>P</i><0.001; MWS-UVS r = 0.61, <i>P</i> = 0.001; SWS-UVS r = 0.58, <i>P</i> = 0.002.