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Table 5 Studies on myopia control using ortho-k lens

From: Effects of orthokeratology on the progression of low to moderate myopia in Chinese children

Study (year)

Swarbrick HAet al. (2015) [19]

Meng-Jun Zhu et al. (2014) [9]

Jaime Paunéet al. (2015) [20]

Hiraortho-k a T et al. (2012) [21]

Lin HJ et al. (2014) [22]

Age (y)

10.8–17.0 years

7–14 years

9–16 years

8–12 years

7–17years

Race/ethnicity

East Asian

Chinese

Caucasian

Japanese

Chinese

Duration of study

1 year

2 years

2 years

5 years

3 years

With control group

yes

yes

yes

yes

yes

Control treatment

rigid gas-permeable (RGP)

spectacles refractive gradient (SRRG)

soft radial

spectacles

0.125 % atropine

Method of assignment

randomized

historic data

nonrandomized

randomized

self-selection

Initial SER

−2.43 ± 0.98

−4.29 ± 2.04

−0.75 ± 0.25

−1.89 ± 0.82

−4.25 ± 1.5

(Ortho-k, D)

     

Initial SER (Control, D)

−2.39 ± 0.93

−4.24 ± 2.38

−0.76 ± 0.27

−1.83 ± 1.06

−4.0 ± 1.75

Increase in axial length in 1 y (Ortho-k, mm)

no change

0.16 ± 0.17

0.15 ± 0.10

0.99 ± 0.47

0.28 ± 0.08

Increase in axial length in 1 y (Control, mm)

0.09 ± 0.09

0.39 ± 0.21

0.26 ± 0.15

1.41 ± 0.68

0.38 ± 0.09

Reduction in myopia progression in 1 year

100 %

59 %

42.3 %

30 %

26.3 %