RESULTS	The Kaplan-Meier estimates of ocular event-free survival rates at 2 years were 70.0 % ( 95 % confidence interval , 57.9 % -82.2 % ) for all eyes , 81.7 % ( 95 % confidence interval , 66.8 % -96.6 % ) for eyes that received intra-arterial chemotherapy as primary treatment , and 58.4 % ( 95 % confidence interval , 39.5 % -77.2 % ) for eyes that had previous treatment failure with intravenous chemotherapy and/or external beam radiation therapy .\