Table 1 Spectacle wear and visual acuity across age groups

Number

14,018

45,178

50,140

6690

4624

Spectacle wear (%)

1.5

2.3

6.6

8.2

11.8

Visual acuity OD (% < 0.8, abnormal > 4 years

–

76.4^a

5.9^a

6.0^b

6.2^b

Visual acuity OS (% < 0.8, abnormal > 4 years)

–

76.2^a

6.0^a

6.2^b

6.2^b

Visual acuity OD (% < 0.5, abnormal)

–

10.1^a

1.1^a

0.4^b

2.2^b

Visual acuity OS (% < 0.5, abnormal)

–

10.8^a

1.2^a

0.7^b

2.0^b

≥2 lines difference OD and OS (%) amblyopia

–

3.8^a

2.7^a

0.9^b

4.6^b