Table 2.

Average Vertical Movement of the Eyes for Each Control Subject Under Each Condition (Values in Degrees)

Subject	Age, y	Alternate Occlusion Without Fixation (Monocular Darkening)	Alternate Increased Luminance Without Fixation (Monocular Flashlight)	Alternate Occlusion With Fixation in Darkness (Crossbar)	Alternate Occlusion With Fixation (Room Light)
1	16	0.55	0.65	0.35	0.00
2	26	−0.20	0.15	0.00	0.05
3	34	0.05	−0.10	−0.20	0.10
4	40	0.08	0.05	0.65	0.55
5	30	−0.05	0.20	−0.25	0.15
6	24	0.10	−0.15	0.30	0.35
Mean ± SD	28 ± 8	0.09 ± 0.25	0.13 ± 0.29	0.14 ± 0.35	0.20 ± 0.21
P value		0.5	0.3	0.3	0.06

^Pvalue reflects significance of magnitude of change.