Table 5 Definition and prevalence rate of amblyopia

Orthoptist

Health Visitor

VA ≤6/9

1.1% (0.7–1.8%)

1.0% (0.6–1.5%)

Not reported

Bray

1996 ³³

GP

1.2% (0.8–1.9%)

Not reported

Eibschitz-

Screening

No screening

Tsimhoni

VA ≤5/10

1.0%

2.6%

<0.01

2000 ²⁷

VA ≤5/15

0.1%

1.7%

<0.001

Rasmussen

Preschool screening

No preschool screening

2000 ³⁴

VA not specified

0.0%

0.1%

Not reported

Williams

Intensive screening

Less intensive screening

2002 ^31,32

Inter-ocular difference ≥ 2 lines

1.5%

2.7%

0.06

VA <6/12

0.6%

1.8%

0.02

Williams

Preschool screening

No preschool screening

2003 ^28,29,30

Inter-ocular difference ≥ 2 lines

1.1%

2.0%

0.05 (0.24)^†

VA ≤6/9

1.9%

3.4%

0.01 (0.16)^†

VA <6/12

0.7%

1.3%

0.11 (0.55)^†