Oxford grading system
cornea damage
CONJUNCTIVA
In DE sufferers, the Oxford grading system (OGS) was created to determine the extent of epithelial surface damage of conjunctiva and cornea damage. To initiate OGS, instilling a 10-µl fluorescein sodium in the superior conjunctiva was required. The OGS method employs a chart comprised of a sequence of panels (figures) referenced from A to E in ascending degree of severity. Staining is shown by punctate dots in each figure. From panels A to E, the number of drawn dots within every panel increases [The pre-interventional selected criteria for DE diagnosis in our study participants were based on the presence of at least one reported DE symptom on DESS [