Figure 2

Change in visual acuity from baseline, at follow-up. Each point represents a single patient’s change in Snellen Visual Acuity from baseline, with baseline taken from last visit prior to trabeculectomy. A line of best fit obtained from linear regression (maximum likelihood) is shown, with 95% confidence bands. The equation of the line of best fit, along with the R² value, which indicate goodness of fit, is shown in the legend.