Table 4.
Near Task |
Amount of Astigmatism, D |
Near Demand |
||||||||
Low (≤1.00 D) |
High (>1.00 D) |
Total |
||||||||
Mean |
SD |
n |
Mean |
SD |
n |
Mean |
SD |
n |
||
THTR | <1 | 0.25 | 0.23 | 116 | 0.27 | 0.23 | 93 | 0.26 | 0.23 | 209 |
≥1 and <3 | 0.34 | 0.30 | 41 | 0.37 | 0.29 | 40 | 0.35 | 0.29 | 81 | |
≥3 | 0.40 | 0.28 | 10 | 0.39 | 0.31 | 21 | 0.39 | 0.30 | 31 | |
Total | 0.28 | 0.25 | 167 | 0.31 | 0.27 | 154 | 0.30 | 0.26 | 321 | |
AATR | <1 | 0.28 | 0.20 | 116 | 0.31 | 0.25 | 93 | 0.30 | 0.23 | 209 |
≥1 and <3 | 0.31 | 0.26 | 41 | 0.32 | 0.17 | 40 | 0.31 | 0.22 | 81 | |
≥3 | 0.59 | 0.46 | 10 | 0.39 | 0.25 | 21 | 0.46 | 0.34 | 31 | |
Total | 0.31 | 0.25 | 167 | 0.33 | 0.23 | 154 | 0.32 | 0.24 | 321 | |
VV | <1 | 0.32 | 0.23 | 116 | 0.38 | 0.26 | 93 | 0.35 | 0.25 | 209 |
≥1 and <3 | 0.33 | 0.18 | 41 | 0.50 | 0.24 | 40 | 0.41 | 0.23 | 81 | |
≥3 | 0.39 | 0.13 | 10 | 0.44 | 0.27 | 21 | 0.42 | 0.23 | 31 | |
Total | 0.33 | 0.21 | 167 | 0.42 | 0.26 | 154 | 0.37 | 0.24 | 321 | |
Total | <1 | 0.29 | 0.17 | 116 | 0.32 | 0.19 | 93 | 0.30 | 0.18 | 209 |
≥1 and <3 | 0.33 | 0.21 | 41 | 0.40 | 0.18 | 40 | 0.36 | 0.20 | 81 | |
≥3 | 0.46 | 0.23 | 10 | 0.41 | 0.24 | 21 | 0.42 | 0.23 | 31 | |
Total | 0.31 | 0.19 | 167 | 0.35 | 0.20 | 154 | 0.33 | 0.19 | 321 |