Table 1 Clinical characteristics of 107 subjects.

From: Reading speed in school-age children with intermittent exotropia

Parameter

IXT (n = 63)

Control (n = 44)

p value

Age (year,mean(SD))

11.5 ± 1.2

11.2 ± 1.0

0.12

Gender (male:female)

34:29

23:21

0.863

NPC (cm)

5.7 ± 3.6

4.3 ± 1.7

0.002

PRA (diopter)

7.2 ± 1.5

6.5 ± 1.7

0.021

AF (circle/min)

7.4 ± 3.5

7.1 ± 3.3

0.410

BI@N (prism diopter)

21.7 ± 10.9

15.0 ± 5.2

 < 0.001

BO@N (prism diopter)

17.0 ± 11.7

28.4 ± 9.69

 < 0.001

BI@D (prism diopter)

12.4 ± 10.0

11.2 ± 5.5

0.07

BO@D (prism diopter)

8.8 ± 10.1

20.0 ± 11.6

 < 0.001

Abnormal sensory fusion@N

26.70%

0

 

Abnormal sensory fusion@D

63.30%

0

 

Myopia

34.9%

31.8%

0.738

LogTNO

2.26 ± 0.44

2.15 ± 0.39

0.05

LogRDS

2.36 ± 0.45

2.21 ± 0.47

 < 0.001

Reading speed in text1 (CPM)

228.7 ± 51.7

254.4 ± 33.6

0.003

Reading speed in text6 (CPM)

233.4 ± 53.0

259.1 ± 37.0

0.008

Average reading speed (CPM)

231.0 ± 51.2

256.8 ± 33.2

0.002

  1. NPC near point of convergence, PRA positive relative accommodative, AF accommodative facility, BI@N base in prism power for fusional vergence amplitudes at near, BO@N base out prism power for fusional vergence amplitudes at near, BI@D base in prism power for fusional vergence amplitudes at distance, BO@D base out prism power for fusional vergence amplitudes at distance, TNO test for stereoscopic vision, a test for near stereo vision, RDS random dot stereo, a test for distance stereo vision, CPM character per minute.
  2. Significant values are given in bold.
  3. *p < 0.05 statistically significant.
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