Figure 1. Amount of tears collected per eye for each subject showing individual amounts, as well as the median and the interquartile range. A: The volume of tears collected for flush tears and basal tears in microliters for right eyes (n = 14) and left eyes (n = 14). Flush tears yielded a median volume of 17 ml for the right and left eyes whereas basal tears yielded 15 ml for the right and left eyes. B: The volume of tears collected using the Schirmer’s strip method for right eyes (n = 14) and left eyes (n = 14), represented as the length of wetting of the strip in millimeters out of a total possible length of 35.0 mm. The median length of wetting for right eyes was 33.0 mm whereas for left eyes it was 30.5 mm.