Prevalence of CVS
The 1-year prevalence of CVS in the study population was 67.4 %. Prevalence of CVS was significantly greater in females (69.5 %) than in males (65.4 %) (p < 0.05). The most commonly reported complaint was headache (45.7 %), followed by dry eyes (31.1 %), whereas the least common complaint was changes in visualizing colours (9.3 %). The prevalence of each symptom in all participants, males and females are presented in Table 2. The prevalence of headache was significantly higher in females, while red eyes, changes in visualizing colours and excessive tearing were more prevalent in males (Table 2). There was no significant difference between the genders for any of the other symptoms of CVS