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Table 1 Demographics and baseline data of subjects who completed and dropped out from the two-year study (median [range] or mean ± SD)

From: Optical changes and association with axial elongation in children wearing orthokeratology lenses of different back optic zone diameter

Parameters

 

6-MM

5-MM

 

P’ (between groups)

Completed (n = 23)

Dropped out (n = 11)

P

Completed (n = 22)

Dropped out (n = 14)

P

Age (years)

0.40

9.32 ± 0.93

8.86 ± 1.09

0.22

9.03 ± 1.25

9.77 ± 0.67

0.027*

Male/female

0.29

6/17

7/4

0.035*

9/13

6/8

0.91

Axial length (mm)

0.07

24.24 ± 0.69

24.88 ± 0.56

0.012*

24.65 ± 0.79

24.37 ± 0.73

0.28

Myopia (D)

0.19

 − 2.17 ± 0.81

 − 3.05 ± 0.84

0.005*

 − 2.47 ± 0.86

 − 2.41 ± 0.73

0.84

Astigmatism (D)

0.043*

 − 0.25 [− 0.50 to 0.00]

 − 0.75 [− 1.25 to 0.00]

0.023*

 − 0.50 [− 0.75 to 0.00]

 − 0.50 [− 1.50 to 0.00]

0.76

SER (D)

0.11

 − 2.31 ± 0.84

 − 3.36 ± 0.98

0.002*

 − 2.69 ± 0.89

 − 2.67 ± 0.71

0.95

Pupil diameter (mm)

0.67

4.39 ± 0.84

4.58 ± 0.57

0.55

4.52 ± 0.90

4.47 ± 1.03

0.88

  1. SER = spherical equivalent refraction; n = number of subjects
  2. 6-MM: using orthokeratology lenses with a back optic zone diameter of 6 mm; 5-MM: using orthokeratology lenses with a back optic zone diameter of 5 mm
  3. P: probability value of unpaired-t or Mann-Whitney U tests for difference between subjects in each group who completed and dropped out from the study
  4. P’: probability value of unpaired-t or Mann-Whitney U tests for difference between groups of subjects who completed the study
  5. *Significantly different between groups or between subjects who completed or dropped out from the study
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Eye and Vision

ISSN: 2326-0254