Table 1 Comparison of demographic, driving, and vision characteristics of study participants with and without subjective symptoms during driving.

From: Discrepancy and agreement between subjective symptoms and visual field impairment in glaucoma patients at a driving assessment clinic

Characteristics

With subjective symptoms (n = 82)

Without subjective symptoms (n = 145)

P value

Age (years)

63.9 ± 11.8

62.9 ± 12.7

0.69†

Gender (male to female ratio)

56:26

91:54

0.40*

Driving

Driving exposure (h/wk)

4.0 ± 4.3

6.3 ± 10.0

0.62†

Number of MVAs by group

24 (29.3%)

27 (18.6%)

0.065*

Visual acuity

Better-eye logMAR

0.024 ± 0.12

0.0003 ± 0.11

0.08†

Worse-eye logMAR

0.28 ± 0.42

0.23 ± 0.39

0.13†

HFA 24–2 MD (dB)

Better-eye MD

− 13.41 ± 6.40

− 10.94 ± 6.73

0.012†

Worse-eye MD

− 20.31 ± 6.25

− 19.08 ± 6.54

0.22†

Esterman score

83.1 ± 16.8

86.7 ± 14.0

0.13†

Integrated visual field (IVF) sensitivity (dB)

Superior IVF0–12

16.86 ± 9.54

21.81 ± 8.81

0.0002†

Superior IVF13–24

17.06 ± 8.90

20.86 ± 8.30

0.0013†

Inferior IVF0–12

23.67 ± 7.69

25.06 ± 7.55

0.12†

Inferior IVF13–24

19.92 ± 10.42

24.78 ± 10.30

0.0008†

MMSE total score

28.0 ± 2.1

28.3 ± 2.1

0.44†

  1. DS driving simulator, HFA Humphrey Visual Field Analyzer, MD mean deviation, IVF integrated visual field; logMAR logarithm of the minimum angle of resolution, MVA motor vehicle accident.
  2. Values are mean ± standard deviation.
  3. †P indicates Wilcoxon rank sum test.
  4. *P indicates chi-square test.
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