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Table 2 Macular pigment optical density (MPOD, in density units D.U.) in the MARS II and MARS III examinations and their differences (ΔMPOD)

From: Changes of macular pigment optical density in elderly eyes: a longitudinal analysis from the MARS study

  MPOD MARS II MPOD MARS III ΔMPOD p value
Mean (SEM) Mean (SEM) Mean (SEM)  
At 0.25° 0.658 (0.010) 0.670 (0.010) 0.012 (0.008) 0.0814
At 0.50° 0.568 (0.010) 0.583 (0.010) 0.014 (0.006) 0.0138
At 1.0° 0.449 (0.008) 0.461 (0.008) 0.011 (0.005) 0.0196
At 2.0° 0.157 (0.004) 0.172 (0.004) 0.015 (0.002) <0.0001