“…(Table 1) [Maino et al, 1990;Pueschel, 1995;Saenz, 1999;Smith, 2001]. The prevalence of strabismus has been reported to range from 9 to 69% among individuals with Down syndrome, compared with Ͻ1 to 10% in the general population and 4 to 45% in the overall population of individuals with ID [Cullen and Butler, 1963;Lyle et al, 1972;Markovits, 1975;Jaeger, 1980;Woodruff et al, 1980;NCHS, 1983;Levy, 1984;Shapiro and France, 1985;Jacobson, 1988;Caputo et al, 1989;Aitchison et al, 1990;Catalano, 1990;Cooley and Graham, 1991;Hestnes et al, 1991;Sacks et al, 1991;Pérez-Carpinell et al, 1994;Prasher, 1994;Roizen et al, 1994;Berk et al, 1996;da Cunha and Moreira, 1996;Maino et al, 1996;McCulloch et al, 1996;Block et al, 1997;Woodhouse et al, 1997van Allen et al, 1999;Buch et al, 2001;Merrick and Koslowe, 2001;Cregg et al, 2003;van Splunder et al, 2003bvan Splunder et al, , 2004Gormezano and Kaminski, 2005;Murphy et al, 2005]. In addition, the prevalence of cataracts, which tends to increase with age in the general population, increases to a greater extent with age for individuals with Down syndrome …”