Research Article
Ophthalmologic Psychophysical Tests Support OCT Findings in Mild Alzheimer’s Disease
Table 2
Mean data and
value of the psychophysical tests.
| Test | AD group | Control group | % difference | value |
| Visual acuity (dec) | 0.78 ± 0.19 | 0.95 ± 0.06 |
−17.89 | 0.001 | Contrast sensitivity | | | | | 3 cpds | 1.39 ± 0.27 | 1.62 ± 0.19 | −14.61 | 0.001 | 6 cpds | 1.58 ± 0.24 | 1.88 ± 0.22 | −16.03 | 0.001 | 12 cpds | 1.12 ± 0.33 | 1.46 ± 0.20 | −23.05 | 0.001 | 18 cpds | 0.61 ± 0.37 | 1.11 ± 0.27 | −44.57 | 0.001 | Rue 28-hue | | | | | Number of errors | 7.41 ± 4.69 | 5.95 ± 4.06 | 24.54 | 0.18 | Tritan unspecific errors | 4.35 ± 2.40 | 2.52 ± 2.00 | 72.62 | 0.009 | PDT (sheet) | | | | | Successful number of sheets | 11.74 ± 2.39 | 13.79 ± 1.47 | −14.87 | 0.01 |
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Mean value ± SD; , Mann-Whitney test (AD: Alzheimer’s disease; cpds: cycles per degree; PDT: perception digital test).
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