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Table 2 Baseline demographics and clinical characteristics

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

  Overminus and prism n = 30 Observation n = 30
N % N %
Sex
 Female 13 43.3 15 50.0
 Male 17 56.7 15 50.0
Age
 3 to < 4 3 10.0 4 13.3
 4 to < 5 8 26.7 10 33.3
 5 to < 6 9 30.0 9 30.0
 6 to < 7 10 30.0 7 23.3
 Mean (SD) 4.87 ± 1.01   4.63 ± 1.00  
 Range 3 to 6   3 to 6  
Refractive error (SE, D)
  + 4.00 to <+ 5.00 1 3.3 2 6.7
  + 3.00 to <+ 4.00 2 6.7 4 13.3
  + 2.00 to <+ 3.00 3 10.0 5 16.7
  + 1.00 to <+ 2.00 9 30.0 6 20.0
  + 0.5 to <+ 1.00 15 50.0 13 43.3
 Mean (SD) 1.59 ± 1.05   1.64 ± 1.29  
 Range + 0.5 to + 4.5   + 0.5 to + 4.25  
Exotropia control
 0 to 3 2 6.7 5 16.7
 4 to 6 20 66.7 19 63.3
 7 to 9 8 26.7 6 20.0
 Mean (SD) 5.37 ± 1.65   5.60 ± 1.50  
 Range 2 to 8   2 to 8  
Exodeviation by PACT at distance (PD)
 1 to 9 0 0.0 0 0.0
 10 to 14 0 0.0 0 0.0
 16 to 18 6 20.0 6 20.0
 20 to 25 10 33.3 8 26.7
 30 to 35 10 33.3 13 43.3
 40 to 45 4 13.3 3 10.0
 Mean (SD) 27.80 ± 7.48   27.46 ± 7.60  
 Range 16 to 40   16 to 40  
Exodeviation by PACT at near (PD)
 1 to 9 0 0.0 0 0.0
 10 to 14 1 3.3 1 3.3
 16 to 18 7 23.3 7 23.3
 20 to 25 10 33.3 12 40.0
 30 to 35 9 30.0 9 30.0
 40 to 45 3 10.0 1 3.3
 Mean (SD) 25.13 ± 6.84   26.46 ± 8.08  
 Range 14 to 40   14 to 40  
Preschool Randot near stereoacuity, arcsec (log arcsec)
 40″ (1.6 log arcsec) 3 10.0 4 13.3
 60 ~ 80″ (1.78 log arcsec) 7 23.3 9 30.0
 100 ~ 140″ (2.0 log arcsec) 6 20.0 5 16.7
 200″ (2.3 log arcsec) 5 16.7 4 13.3
 400″ (2.6 log arcsec) 5 16.7 3 10.0
 800″ (2.9 log arcsec) 3 10.0 4 13.3
 Nil (3.1 log arcsec) 1 3.3 1 3.3
 Mean (SD) (log arcsec) 2.14 ± 0.46   2.19 ± 0.44  
 Range (log arcsec) 1.6 to 3.1   1.6 to 3.1  
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