Table 5.
Distant Task |
Amount of Astigmatism, D |
Distant Demand |
||||||||
Low (≤2.75 D) |
High (>2.75 D) |
Total |
||||||||
Mean of SDs |
SD |
n |
Mean of SDs |
SD |
n |
Mean of SDs |
SD |
n |
||
THTR | <1 | 0.19 | 0.16 | 116 | 0.19 | 0.10 | 69 | 0.19 | 0.14 | 185 |
≥1 and <3 | 0.28 | 0.19 | 14 | 0.24 | 0.11 | 34 | 0.25 | 0.14 | 48 | |
≥3 | — | — | 0 | 0.24 | 0.14 | 14 | 0.24 | 0.14 | 14 | |
Total | 0.19 | 0.17 | 130 | 0.21 | 0.11 | 117 | 0.20 | 0.14 | 247 | |
AATR | <1 | 0.22 | 0.17 | 116 | 0.25 | 0.17 | 69 | 0.23 | 0.17 | 185 |
≥1 and <3 | 0.32 | 0.32 | 14 | 0.38 | 0.43 | 34 | 0.36 | 0.40 | 48 | |
≥3 | — | — | 0 | 0.29 | 0.15 | 14 | 0.29 | 0.15 | 14 | |
Total | 0.23 | 0.19 | 130 | 0.29 | 0.28 | 117 | 0.26 | 0.24 | 247 | |
VV | <1 | 0.26 | 0.32 | 116 | 0.29 | 0.17 | 69 | 0.27 | 0.27 | 185 |
≥1 and <3 | 0.32 | 0.28 | 14 | 0.35 | 0.15 | 34 | 0.34 | 0.19 | 48 | |
≥3 | — | — | 0 | 0.32 | 0.17 | 14 | 0.32 | 0.17 | 14 | |
Total | 0.26 | 0.32 | 130 | 0.31 | 0.16 | 117 | 0.28 | 0.26 | 247 | |
Total | <1 | 0.22 | 0.17 | 116 | 0.24 | 0.12 | 69 | 0.23 | 0.16 | 185 |
≥1 and <3 | 0.31 | 0.20 | 14 | 0.32 | 0.17 | 34 | 0.32 | 0.18 | 48 | |
≥3 | — | — | 0 | 0.28 | 0.13 | 14 | 0.28 | 0.13 | 14 | |
Total | 0.23 | 0.18 | 130 | 0.27 | 0.14 | 117 | 0.25 | 0.16 | 247 |