Table 2 Macular pigment optical density (MPOD) response to supplementation. MPOD data for the supplementation group obtained prior to supplementation together with the rates of change in MPOD during supplementation. The p-values indicate whether these rates are significantly different from zero. (AU = absorbance unit)

1/L

0.421

0.016

2.22 ± 0.11

< 0.0001

Signif. increase

1/R

0.446

0.025

2.01 ± 0.06

< 0.0001

Signif. increase

2/L

0.779

0.015

-0.18 ± 0.30

0.57

No signif. change

2/R

0.679

0.016

0.17 ± 0.38

0.66

No signif. change

3/L

0.286

0.018

0.27 ± 0.10

0.012

Signif. increase

3/R

0.306

0.011

-0.04 ± 0.09

0.69

No signif. change

4/L

0.468

0.019

1.23 ± 0.21

< 0.0001

Signif. increase

4/R

0.355

0.022

1.58 ± 0.28

< 0.0001

Signif. increase

5/L

0.254

0.018

0.51 ± 0.14

0.0009

Signif. increase

5/R

0.265

0.027

-0.46 ± 0.18

0.016

Signif. decrease

6/L

0.351

0.019

-0.22 ± 0.16

0.18

No signif. change

6/R

0.362

0.014

0.02 ± 0.21

0.94

No signif. change

7/L

0.335

0.017

0.92 ± 0.34

0.015

Signif. increase

7/R

0.304

0.02

-0.57 ± 0.35

0.12

No signif. change

8/L

0.718

0.013

0.65 ± 0.25

0.016

Signif. increase

8/R

0.722

0.014

0.44 ± 0.32

0.17

No signif. change

9/L

0.344

0.012

1.07 ± 0.29

0.0009

Signif. increase

9/R

0.421

0.011

1.33 ± 0.35

0.0008

Signif. increase

10/L

0.96

0.008

0.43 ± 0.05

< 0.0001

Signif. increase

10/R

0.854

0.008

0.41 ± 0.04

< 0.0001

Signif. increase