Table 2 Comparisons of visual characteristics in studied groups (M ± SD)
From: Fundamentals of Presbyopia: visual processing and binocularity in its transformation
Characteristics | Control | Presbyopia | P-value |
|---|---|---|---|
UDVA, logMAR | −0.071 ± 0.045 | −0.003 ± 0.026 | 0.0001 |
UNVA, logMAR | 0.033 ± 0.043 | 0.575 ± 0.215 | 0.0001 |
CSS, frequency 3 cpd, units | 7.41 ± 0.49 | 5.66 ± 0.54 | 0.0001 |
CSS, frequency 6 cpd, units | 7.54 ± 0.45 | 6.95 ± 0.50 | 0.01 |
CSS, frequency 12 cpd, units | 7.41 ± 0.45 | 6.83 ± 0.37 | 0.01 |
CSS, frequency 18 cpd, units | 7.41 ± 0.45 | 6.02 ± 0.55 | 0.0001 |
Threshold of retina sensitivity, dB | 27.9 ± 1.1 | 24.6 ± 3.5 | 0.01 |
Implicit time VEP on flash, msec | 32.1 ± 14.5 | 29.1 ± 10.5 | 0.19 |
Amplitude VEP on flash, μV | 99.7 ± 6.4 | 100.6 ± 8.2 | 0.17 |
Implicit time a-wave max ERG, msec | 15.7 ± 7.5 | 21.3 ± 11.0 | 0.001 |
Amplitude a-wave max ERG, μV | 149.7 ± 36.0 | 139.8 ± 42.7 | 0.17 |
Implicit time b-wave max ERG, msec | 36.2 ± 3.2 | 45.9 ± 6.6 | 0.0001 |
Amplitude b-wave max ERG, μV | 311.8 ± 57.7 | 287.0 ± 63.4 | 0.027 |
FFT, Hz | 34.7 ± 2.1 | 32.3 ± 2.9 | 0.001 |