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. Author manuscript; available in PMC: 2021 May 1.
Published in final edited form as: Optom Vis Sci. 2020 May;97(5):370–376. doi: 10.1097/OPX.0000000000001506

Figure 2.

Figure 2.

Repeatability of the Sloan low-contrast letter acuity (Sloan-LCLA) test and the automated low-contrast letter acuity (automated-LCLA) test is shown in Bland-Altman plots at 2.5% and 10% contrast levels. The LCLA difference between the second and the first administration (second minus first) of each test is plotted against the mean of two tests. (A) Automated-LCLA at 2.5%. (B) Automated-LCLA at 10%. (C) Sloan-LCLA at 2.5%. (D) Sloan-LCLA at 10%. From the top to the middle and the bottom, three lines show the upper 95% LoA, bias, the lower 95% LoA, respectively.