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. 2021 Aug 12;36(9):1820–1825. doi: 10.1038/s41433-021-01740-6

Fig. 3. Scatter plot showing the relationship between the serum retinol concentration and the optic nerve sheath diameter at 3 mm behind globe.

Fig. 3

55 patients with normal-tension glaucoma and 38 patients with primary open-angle glaucoma were included in the statistics. The correlation was significant (r = 0.349, p = 0.001).