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Table 4 Orthoptic measurements between treatment group and observation group after 12 months

From: A randomized trial evaluating efficacy of overminus lenses combined with prism in the children with intermittent exotropia

 

Overminus and prism n = 28

Observation n = 29

n

%

n

%

Refractive error (SE, D)

  + 4.00 to <+ 5.00

1

3.6

2

6.9

  + 3.00 to <+ 4.00

2

7.1

3

10.3

  + 2.00 to <+ 3.00

4

14.3

7

24.1

  + 1.00 to <+ 2.00

10

35.7

7

24.1

 0 to <+ 1.00

10

35.7

10

34.5

 -1.00 to<0

1

3.6

0

0.0

 Mean (SD)

1.43 ± 1.12

1.42 ± 1.25

 Range

−0.25 to + 4.5

+ 0.25 to + 4.25

 Difference in means (95% CI)

0.01 (−0.61 to 0.62)

 Change between baseline and 12 months

p = 0.278

p = 0.378

Exotropia control

 0 to 3

20

71.4

2

6.9

 4 to 6

6

21.4

19

65.5

 7 to 9

2

7.1

8

27.6

 Mean (SD)

1.75 ± 1.18

5.72 ± 1.28

 Range

3 to 8

3 to 8

 Difference in means (95% CI)

−3.97 (−4.63 to −3.33)

 Change between baseline and 12 months

p<0.001

p = 0.546

Exodeviation by PACT at distance

 No exodeviation (orthophoria)

0

0.0

0

0.0

 1 to 9

0

0.0

0

0.0

 10 to 14

6

21.4

4

13.8

 16 to 18

3

10.7

11

37.9

 20 to 25

11

39.3

11

37.9

 30 to 35

8

28.6

3

10.3

 40 to 45

0

0.0

8

28.6

 Mean (SD)

22.46 ± 7.61

27.48 ± 7.24

 Range

12 to 35

18 to 45

 Difference in means (95% CI)

−5.02 (−8.96 to −1.08)

 Change between baseline and 12 months

p<0.001

p = 0.177

Exodeviation by PACT at near

 No exodeviation (orthophoria)

0

0.0

0

0.0

 1 to 9

4

14.3

0

0.0

 10 to 14

6

21.4

6

20.7

 16 to 18

8

28.6

11

37.9

 20 to 25

8

28.6

10

34.5

 30 to 35

2

7.1

2

6.9

 40 to 45

0

0.0

0

0.0

 Mean (SD)

16.25 ± 7.03

26.72 ± 7.41

 Range

8 to 30

16 to 40

 Difference in means (95% CI)

−10.47 (−14.31 to −6.64)

 Change between baseline and 12 months

p<0.001

p = 0.127

Preschool Randot near stereoacuity, arcsec (log arcsec)

 40″ (1.6 log arcsec)

7

25

3

10.3

 60″ (1.78 log arcsec)

8

28.6

7

24.1

 100″ (2.0 log arcsec)

8

28.6

6

20.7

 200″ (2.3 log arcsec)

4

14.3

6

20.7

 400″ (2.6 log arcsec)

1

3.6

3

10.3

 800″ (2.9 log arcsec)

0

0.0

4

13.8

 Nil (3.1 log arcsec)

0

0.0

0

0.0

 Mean (SD) (log arcsec)

1 .91 ± 0.26

 

2.16 ± 0.42

 

 Range (log arcsec)

1.6 to 2.6

 

1.6 to 2.9

 

 Difference in means (95% CI)

−0.25 (−0.44 to −0.06)

 Change between baseline and 12 months

p<0.001

p = 0.265