Table 1.
Prevalence of strabismus, anisometropia, and amblyopia in recent (2001–2012) population-based studies of children.
| Site | N | Age | Strabismus | Anisometropia | Amblyopia | |
|---|---|---|---|---|---|---|
| BPEDS (Friedman et al., 2009; Giordano et al., 2009) | US | 2546 | 0.5–6 yr | 2.2% | 4.5% | 1.3% |
| MEPEDS (Multi-Ethnic Pediatric Eye Disease Study, 2008) | US | 6014 | 0.5–6 yr | 2.4% | 4.1% | 2.0% |
| NICHS (Donnelly et al., 2005) | UK | 1582 | 8–9 yr | 4.0% | - | 2.0% |
| ALSPAC (Williams et al., 2008) | UK | 7825 | 7 yr | 2.3% | - | 3.6% |
| RAMSES (Groenewoud et al., 2010) | N | 2964 | 7 yr | - | - | 3.4% |
| SCHC (Kvarnstrom et al., 2001) | S | 3126 | 10 yr | 3.1% | - | |
| SPEDS (Pai et al., 2012) | A | 1422 | 2.5–6 yr | - | - | 1.9% |
| SMS (Huynh et al., 2006; Robaei et al., 2006) | A | 1765 | 5–8 yr | 2.8% | 2.6% | 1.8% |
| MEAN | 2.8% | 3.8% | 2.4% |
US = United States, UK = United Kingdom, N=Netherlands, S=Sweden, A=Australia