摘要：The aim of the study was to determine the incidence of monosymptomatic optic neuritis (MON) in residents of Split-Dalmatia County, Croatia. The 127 cases (83 female, aged 26.2+/-9.9 and 44 male aged 26.9 +/-11.2) with MON presented between January 1985 and December 2001 were analyzed from hospital data. The annual incidence was 1.6 per 100,000 (95% CI, 0–3). The incidence among females was 2.2 (95% CI, 0–4.6) cases / 100,000 per year and 1.1 (95% CI, 0–3) among males. The difference in incidence rates for women vs. men was not significant (x2=0.41; p=0.52), although it is more likely that a true difference exists. The peak incidence in both sexes observed in the group 20–29 years of age was 4.2 (95% CI, 0–10). The highest incidence of MON was found in spring (46 cases). In summary, the incidence of MON in Split-Dalmatia County during the 17 years period is relatively low.
