Fig. 1From: Retinoblastoma in a pediatric oncology reference center in Southern BrazilProportion of cases of extraocular disease at diagnosis in patients with unilateral and bilateral Rb from 1983 to 2012. Legend: At the point where the two lines meet (between 1993 and 1997), 33 % refers to unilateral cases and 31 % refers to bilateral cases. *Line red: bilateral extraocular *Line blue: unilateral extraocular Back to article page