Fig. 1
From: Prevalence of dry eye syndrome in association with the use of contact lenses in Saudi Arabia
OSDI score distribution according to severity. The figure illustrates the distribution of OSDI score according to overall score. OSDI scores were distributed as normal 0–12, mild DES 13–22, moderate DES 23–32 and severe DES above 33. Frequency is the number of participants scoring OSDI within each designated score