Estimation of macular pigment optical density in the elderly: test-retest variability and effect of optical blur in pseudophakic subjects.
Gallaher KT, Mura M, Todd WA, Harris TL, Kenyon E, Harris T, Johnson KC, Satterfield S, Kritchevsky SB, Iannaccone A. Estimation of macular pigment optical density in the elderly: test-retest variability and effect of optical blur in pseudophakic subjects. Vision Res. 2007 Apr; 47(9):1253-9.