Affected Eye 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Frequency %
Unilateral 7 7 9 5 8 7 15 6 5 7 76 76.76%
Bilateral 4 2 5 1 4 1 3 1 0 2 23 23.24%
  11 9 14 6 12 8 18 7 5 9 99  
Table 3: Distribution of retinoblastoma patients based on lateralization.