Table 2.

Minimum and maximum SVV and SVH values at different head-tilt angles in different age groups.

Head-tilt angle (°)	≤ 20 yrs (n = 30)		21–30 yrs (n = 30)		31–40 yrs (n = 30)		41–50 yrs (n = 30)		51–60 yrs (n = 30)		≥ 61 yrs (n = 30)
	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max
	SVV (°)
90R	7.00	19.4	−11.8	12.5	−11.6	11.6	−12.8	13.6	−17.4	19.1	−18.4	21.1
60R	−18.6	14.9	−19.5	12.4	−11.5	11.5	−12.1	14.1	−17.0	19.1	−21.0	20.7
45R	−18.0	15.8	−18.9	10.9	−12.4	10.2	−13.9	13.3	−18.4	13.5	−20.6	20.3
30R	−18.7	18.6	−11.0	12.0	−10.5	10.3	−13.6	10.1	−16.9	16.9	−5.2	18.6
0	−17.7	19.2	−12.5	12.0	−10.5	11.4	−10.3	10.2	−18.5	18.1	−20.4	18.7
30L	−17.9	18.4	−11.9	10.6	−11.0	11.0	−11.6	10.3	−17.8	18.7	−18.1	17.6
45L	−20.0	18.2	−13.6	12.4	−11.5	11.5	−12.8	16.6	−18.1	16.2	−19.8	20.1
60L	−19.4	16.5	−11.0	11.0	−11.1	10.4	−10.3	12.5	−13.8	18.6	−18.0	21.1
90L	−15.2	17.6	−14.3	11.0	−21.1	11.5	−14.9	12.3	−17.9	17.1	−28.2	16.6
	SVH (°)
90R	−19.2	17.8	−12.4	15.0	−10.8	11.4	−13.2	15.5	−18.9	15.3	−20.0	22.7
60R	−18.0	17.4	−14.6	10.9	−13.5	10.8	−13.5	13.4	−18.9	11.3	−23.2	21.8
45R	−20.6	18.4	−12.1	12.3	−14.9	11.1	−13.0	14.4	−16.8	13.1	−22.3	18.3
30R	−17.9	17.6	−12.3	12.4	−11.8	11.4	−16.5	18.4	−17.7	16.9	−16.0	17.4
0	−22.8	19.4	−12.3	12.3	−11.3	10.6	−8.9	13.3	−17.3	18.5	−12.5	17.7
30L	−18.2	18.5	−11.7	12.2	−7.4	10.1	−14.6	12.1	−15.2	19.1	−19.5	15.3
45L	−18.7	17.5	−10.1	12.4	−10.6	11.2	−11.3	15.0	−15.6	15.0	−19.0	16.5
60L	−17.9	19.4	−17.0	10.7	−9.8	8.4	−11.5	17.9	−16.6	17.8	−21.9	15.2
90L	−28.8	17.7	−15.1	12.4	−13.7	11.3	−12.9	9.9	−19.6	18.2	−20.5	20.9

SVV, Subjective Visual Vertical; SVH, Subjective Visual Horizontal; R, Right; L, Left.