Correlation between macular pigment optical densities measured by different methods.

Significant correlations are reported with the Pearson R correlation coefficient and the p-values (without Bonferroni correction) in brackets. The correlations between HMP and MPR as well as HMP and HFP are the primary outcome measures (bold). MPOD measured with HMP correlates significantly with MPOD-MPR, and also with MPOD-HFP at two locations; however, only the correlation with HFP at 0.25° remains significant after Bonferroni correction for testing at four locations. *The significances of the correlations with HFP have to be corrected for testing at four locations. The positive correlations with HFP at 0.25° and at 0.5° remain significant even after Bonferroni correction. Correlation between macular pigment optical densities measured by different methods.