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Table 3 The mean orthoptic measurements at each follow-up points

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

  Overminus and prism Observation p value
Refractive error (SE, D)
 pretreatment 1.59 ± 1.05 1.64 ± 1.29 0.254
 1 month 1.59 ± 1.05# 1.64 ± 1.29## 0.254
 3 months 1.34 ± 1.08# 1.54 ± 1.29## 0.342
 6 months 1.34 ± 1.08# 1.48 ± 1.25## 0.271
 12 months 1.43 ± 1.12# 1.42 ± 1.25## 0.353
Exotropia control
 pretreatment 5.37 ± 1.65 5.60 ± 1.50 0.569
 1 month 3.70 ± 1.26* 5.50 ± 1.43## < 0.01
 3 months 2.38 ± 0.98* 5.67 ± 1.30## < 0.01
 6 months 2.17 ± 1.00* 5.76 ± 1.28## < 0.01
 12 months 1.75 ± 1.18* 5.72 ± 1.28## < 0.01
Exodeviation by PACT at distance (PD)
 pretreatment 27.80 ± 7.48 27.46 ± 7.60 0.865
 1 month 22.80 ± 7.50* 27.80 ± 8.14## 0.017
 3 months 22.72 ± 7.62* 28.03 ± 8.16## 0.012
 6 months 22.55 ± 7.62* 28.83 ± 8.23## 0.004
 12 months 22.46 ± 7.61* 27.48 ± 7.24## 0.014
Exodeviation by PACT at near (PD)
 pretreatment 25.13 ± 6.84 26.46 ± 8.08 0.493
 1 month 16.93 ± 7.09* 26.76 ± 8.19## < 0.01
 3 months 16.37 ± 6.11* 27.00 ± 8.20## < 0.01
 6 months 16.13 ± 5.87* 26.66 ± 7.63## < 0.01
 12 months 16.25 ± 7.03* 26.72 ± 7.41## < 0.01
Preschool Randot near stereoacuity, arcsec (log arcsec)
 pretreatment 2.14 ± 0.46 2.19 ± 0.44 0.717
 1 month 1.97 ± 0.33* 2.19 ± 0.44## 0.03
 3 months 1.96 ± 0.29* 2.19 ± 0.44## 0.021
 6 months 1.95 ± 0.28* 2.17 ± 0.42## 0.017
 12 months 1 .91 ± 0.26* 2.16 ± 0.42## 0.01
  1. *Compared with pretreatment in treatment group, p<0.05; #Compared with pretreatment in treatment group, p>0.05; ##Compared with pretreatment in observation groups, p>0.05
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