Figure 2. Bradford results for the total protein and protein concentrations showing individual amounts, as well as the median and the interquartile range, for each method and eye. A: The median total protein amount obtained using Schirmer’s strip was 34.56 µg/µl for the right eyes and 47.93 µg/µl for the left eyes. For basal tears, the median total protein amount was 32.08 µg/µl for the right eyes and 65.58 µg/µl for the left eyes. For flush tears, the median total protein amount was 39.27 µg/µl for the right eyes and 46.93 µg/µl for the left eyes. B: The median protein concentration using Schirmer’s strip was calculated to be 0.69 µg/µl for the right eyes and 1.03 µg/µl for the left eyes. For basal tears, the median protein concentration was 0.64 µg/µl for the right eyes and 1.31 µg/µl for the left eyes. For flush tears, the median protein concentration was 0.79 µg/µl for the right eyes and 0.96 µg/µl for the left eyes. * p<0.05 between the eyes for Schirmer tears and *** p<0.001 between the eyes for basal tears.