Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Bland-Altman plots to demonstrate agreement between Sloan low-contrast letter acuity (Sloan-LCLA) and the automated low-contrast letter acuity (automated-LCLA) at 2.5% and 10% levels (A & B). The difference between the average scores (i.e. Sloan-LCLA minus automated-LCLA) for the two tests is plotted against the mean of two tests. From the top to the middle and the bottom, three lines show the upper 95% LoA, the mean difference, the lower 95% LoA, respectively.
