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. 2022 Mar;10(6):299. doi: 10.21037/atm-22-173

Figure 4.

Figure 4

Forest plot displaying the effect of lutein supplementation on MPOD in patients with AMD. The combined WMD and 95% CI were calculated using the random-effects model. Murray IJ: dose of supplements: 10 mg; duration of supplements: 4 months. Murray IJ [1]: dose of supplements: 10 mg; duration of supplements: 8 months. Murray IJ [2]: dose of supplements: 10 mg; duration of supplements: 12 months. Huang YM: dose of supplements: 20 mg; duration of supplements: 24 weeks. Huang YM [1]: dose of supplements: 20 mg; duration of supplements: 48 weeks. Huang YM [2]: dose of supplements: 20 mg; duration of supplements: 24 months. Huang YM [3]: dose of supplements: 10 mg; duration of supplements:24 weeks. Huang YM [4]: dose of supplements: 10 mg; duration of supplements: 48 weeks. Huang YM [5]: dose of supplements: 10 mg; duration of supplements: 24 months. Li Chan: dose of supplements: 20 mg; duration of supplements: 24 weeks. Li Chan [1]: dose of supplements: 20 mg; duration of supplements: 48 weeks. Gao Rongyu: dose of supplements: 20 mg; duration of supplements: 3 months. WMD, weighted mean difference; MPOD, macular pigment optical density; AMD, age-related macular degeneration; CI, confidence interval.