Table 4 Centile values of axial length (mm) for the younger (6–7 to 15–16 years) and older (12–13 to 21–22 years) cohorts (1st–99th).

From: Axial growth and refractive change in white European children and young adults: predictive factors for myopia

Age (years)

Younger cohort

Percentiles

1st

5th

10th

25th

50th

75th

90th

95th

99th

6–7

20.49

21.22

21.52

22.02

22.56

23.07

23.46

23.76

24.25

9–10

20.78

21.59

21.96

22.53

23.08

23.59

24.08

24.49

24.88

12–13

21.03

21.81

22.24

22.82

23.36

23.88

24.42

24.78

25.08

15–16

21.44

22.20

22.58

23.12

23.65

24.26

24.73

25.21

25.63

9 year change

0.95

0.98

1.06

1.10

1.09

1.19

1.27

1.45

1.38

Approx. annual change

0.11

0.11

0.12

0.12

0.12

0.13

0.14

0.16

0.15

Age (years)

Older cohort

Percentiles

1st

5th

10th

25th

50th

75th

90th

95th

99th

12–13

20.79

21.76

22.17

22.71

23.30

23.91

24.46

24.86

25.54

15–16

20.96

21.86

22.3

22.84

23.44

24.09

24.67

25.08

26.12

18–19

20.83

21.64

22.18

22.84

23.47

24.19

24.97

25.29

26.5

21–22

20.97

21.91

22.53

23.04

23.69

24.54

25.20

25.50

26.75

9 year change

0.18

0.15

0.36

0.33

0.39

0.63

0.74

0.64

1.21

Approx. annual change

0.02

0.02

0.04

0.04

0.04

0.07

0.08

0.07

0.13

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