Fig. 3
From: Human tear film protein sampling using soft contact lenses
Objective bulbar conjunctival injection (BCI). A Photos demonstrating pre- (left) and post- (right) SS sampling, B Scoring of all pre- and post-sampling photos for all subjects and methods by three optometrists in a blinded pairwise comparison. BCI Score: Photo pairs scored with pre-sampling photos having greater BCI were counted as “-1”. Post-sampling photos scored with greater BCI were counted as “1”, C Average BCI score for individual sampling methods analyzed by one-sample t-tests. Error bars represent standard deviation, n = 12. * = p-value ≤ 0.05, ** = p-value ≤ 0.01