Fig. (1) Conjunctival markers of inflammation. Conjunctival cells were obtained by impression cytology, stained and assessed by flow cytometry. Nil, no topical medication; PG, prostaglandin analogues only; CS, corticosteroids only; PG+CS, prostaglandin analogues and corticosteroids concurrently. The mean ± the standard error of the mean of the flow cytometric event counts obtained is presented. There were no statistically significant differences between the groups.