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. 2020 Aug 21;15(8):e0238047. doi: 10.1371/journal.pone.0238047

Table 1. Correlation between Worth 4 dot test and triplet variables.

Mean and Standard Deviation for each variable of the triplet (interocular visual acuity difference, stereoacuity and imbalance factor) for each category considered of Worth test. Worth test answers have been ordered according to the extent of suppression scotoma, considering diplopia as an intermediate stage between fusion and suppression. Number of occurrences in the sample, N, is also included. Correlations and p-values between Worth test categories and each variable of the triplet are included in the last row.

Worth test categories N Acuity difference Imbalance Factor Stereoacuity
mean SD mean SD mean SD
0 (1.5 F + 5.0 F) 57 0.04 0.07 1.54 0.75 1.91 0.40
1 (1.5 D + 5.0 F) 1 0.00 1.63 2.90
2 (1.5 D + 5.0 D) 10 0.03 0.04 2.65 1.87 3.11 0.00
3 (1.5 S + 5.0 F) 10 0.21 0.13 1.88 0.88 2.75 0.46
4 (1.5 S + 5.0 D) 15 0.37 0.24 6.29 4.40 3.10 0.05
5 (1.5 S + 5.0 S) 7 0.72 0.25 7.64 5.02 3.04 0.19
Correlation (p-value) 0.696 (p < 0.0001) 0.538 (p < 0.0001) 0.791 (p < 0.0001)

F: fusion; D: diplopia; S: suppression; 1.5 degrees and 5.0 degrees of visual angle.