Table 5.
Association of hyperopia with stereoacuity in non-strabismic, non-amblyopic children by severity level of hyperopia (N=2644)§.
| Hyperopia > +3.25 D | |||||||
|---|---|---|---|---|---|---|---|
| Stereoacuity Levels (arc sec) | No Hyperopia (≤+3.25 D) (N=2338) | Hyperopia (>+3.25 D) (N=206) | P for comparing No/Yes hyperopia | Group 1 (N=39) | Group 2 (N=72) | Group 3 (N=95) | P for comparing among 3 severity levels |
| Unable£ | 16 (0.7%) | 6 (2.9%) | <0.0001† | 1 (1.3%) | 1 (0.9) | 4 (3.8%) | 0.002† |
| No measurable stereopsis | 79(3.2%) | 33(16.0%) | 9(23.1%) | 12(16.7%) | 12(12.6%) | ||
| 480 | 95(3.9%) | 23(11.2%) | 11(28.2%) | 7(9.7%) | 5(5.3%) | ||
| 240 | 201(8.2%) | 24(11.7%) | 7(17.9%) | 4(5.6%) | 13(13.7%) | ||
| 120 | 625(25.6%) | 56(27.2%) | 4(10.3%) | 24(33.3%) | 28(29.5%) | ||
| 60 | 1422(58.3%) | 64(31.1%) | 7(17.9%) | 24(33.3%) | 33(34.7%) | ||
|
Median (1st, 3rd quartile) |
60 (60, 120) |
120 (60, 480) |
<0.0001‡ | 480 (120, 480) |
120 (60, 480) |
120 (60, 240) |
0.002* |
| P for comparing to no hyperopia | P<0.0001‡ | P<0.0001‡ | P<0.0001‡ | ||||
†
P value is from Fisher exact test.
‡
P value is from Wilcoxon rank sum test.
*
P value is from Kruskal-Wallis test.
§
Stereo acuity data is available from Phase 1 (Year 2) and Phase 2 only, and children with amblyopia or strabismus were excluded.
£
Unable indicates child was unable to complete the demonstration/pretest card of Stereo Smile II test.