Appendix Table A4.
Distribution of Stereoacuity Scores and Change in Stereoacuity Scores from Baseline by Treatment Group (Limited to Participants without Strabismus).
| Baseline | 4 weeksa | S weeksa | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| Binocular Treatment |
Continued Spectacles |
Binocular Treatment |
Continued Spectacles |
Binocular Treatment |
Continued Spectacles |
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| N | % | N | % | N | % | N | % | N | % | N | % | |
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| Per Group (N) | 61 | 54 | 58 | 51 | 5l | 51 | ||||||
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| Stereoacuity (Seconds of Arc) b | ||||||||||||
| Missing/Not done | 0 | 0% | 2 | 4% | 4 | 7% | 4 | 8% | 4 | 7% | 5 | 10% |
| Nil | 15 | 25% | 11 | 20% | 11 | 19% | 8 | 16% | 11 | 19% | 8 | 16% |
| 2000 | 9 | 15% | 6 | 11% | 5 | 9% | 7 | 14% | 7 | 12% | 2 | 4% |
| 800 | 5 | 8% | 5 | 9% | 8 | 14% | 4 | 8% | 5 | 9% | 8 | 16% |
| 400 | 10 | 16% | 12 | 22% | 8 | 14% | 10 | 20% | 5 | 9% | 8 | 16% |
| 200 | 10 | 16% | 12 | 22% | 9 | 16% | 9 | 18% | 11 | 19% | 8 | 16% |
| 100 | 9 | 15% | 3 | 6% | 10 | 1l% | 4 | 8% | 9 | 16% | 6 | 12% |
| 60 | 1 | 2% | 2 | 4% | 3 | 5% | 4 | 8% | 2 | 4% | 2 | 4% |
| 40 | 2 | 3% | 1 | 2% | 0 | 0% | 1 | 2% | 3 | 5% | 4 | 8% |
| Median (Range) | 400 (40 to Nil) | 400 (40 to Nil) | 400 (60 to Nil) | 400 (40 to Nil) | 400 (40 to Nil) | 400 (40 to Nil) | ||||||
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| Change in Level of Stereoacuity from Baseline c | ||||||||||||
| ≥ 2 Levels Worse | 8 | 15% | 6 | 13% | 5 | 9% | 3 | 7% | ||||
| Within 1 Level | 37 | 69% | 34 | l6% | 40 | l5% | 30 | 6l% | ||||
| ≥ 2 Levels Better | 9 | 1l% | 5 | 11% | 8 | 15% | 12 | 27% | ||||
a
Limited to follow-up visits completed within the pre-specified analysis windows.
b
Results of the Randot Butterfly stereoacuity test were analyzed as 2000 seconds of arc (if correct response) or nil (if incorrect response) in the presence of an incorrect response on the 800 seconds of arc level of the Randot Preschool stereoacuity test.
c
The exact Wilcoxon rank-sum test was used to compare the change in stereoacuity from baseline to the 4-week visit (Bonferroni-adjusted P > .99) and to the 8-week visit (Bonferroni-adjusted P > .99) between treatment groups for participants without strabismus.