Table 1.

Visual acuity measures (in logMAR, see text) for normal control subjects across decades of age. Each cell contains mean and 1 SD (in parentheses) values. Conditions are: Static acuity (head stationary), Active DVA (participant actively rotating head horizontally in a sinusoidal fashion), and passive head thrusts exciting the named semicircular canal. htDVA ALL refers to mean DVA LogMAR score across all 6 directions of canal plane DVA testing.

Age Group	Static Acuity	Active DVA	Right Horizontal	Left Horizontal	Right Superior	Left Superior	Right Posterior	Left Posterior	htDVA ALL
20 – 29	0.005 (0.012)	0.033 (0.027)	0.043 (0.035)	0.045 (0.035)	0.047 (0.039)	0.052 (0.034)	0.052 (0.063)	0.057 (0.026)	0.049 (0.039)
30 – 39	0.003 (0.035)	0.034 (0.048)	0.061 (0.079)	0.051 (0.07)	0.092 (0.066)	0.094 (0.061)	0.074 (0.078)	0.065 (0.047)	0.073 (0.067)
40 – 49	0.002 (0.006)	0.025 (0.027)	0.048 (0.041)	0.022 (0.021)	0.048 (0.045)	0.043 (0.03)	0.05 (0.044)	0.051 (0.053)	0.044 (0.04)
50 – 59	0.02 (0.023)	0.054 (0.033)	0.087 (0.063)	0.072 (0.056)	0.089 (0.084)	0.078 (0.053)	0.085 (0.049)	0.076 (0.082)	0.081 (0.063)
60 +	0.053 (0.061)	0.113 (0.087)	0.12 (0.114)	0.138 (0.097)	0.11 (0.086)	0.128 (0.104)	0.164 (0.115)	0.121 (0.056)	0.13 (0.095)
All	0.016 (0.037)	0.052 (0.058)	0.072 (0.075)	0.065 (0.071)	0.077 (0.069)	0.079 (0.067)	0.085 (0.083)	0.074 (0.059)	0.075 (0.071)
r (p-value)	0.4* (0.004)	0.431* (0.002)	0.331* (0.018)	0.425* (0.002)	0.268 (0.057)	0.302* (0.031)	0.377* (0.006)	0.349* (0.012)	0.34* (< 0.001)

Bottom row: Relationship (r) between visual acuity and age, where *denotes significance at alpha < 0.05.