Fig 9. Correlation of constriction ratio as measured by UP with visual acuity in unilateral^A ON+ eyes.

Black line = regression line, grey area = 95% confidence interval, ON = optic neuritis, r = correlation coefficient of constriction ratio in UP and visual acuity, unilateral^A ON+ eyes = eyes with unilateral ON or bilateral ON episodes with an unequal number of ON episodes in the left and right eye, UP = ultrasound pupillometry, 95% CI = 95% confidence interval.