TABLE 1.

CLINICAL CHARACTERISTICS OF EYES MEASURED^*

VARIABLE	OD	OS	P VALUE
Median Snellen VA	20/20 (20/15 to 20/40)	20/20 (20/15 to 20/40)
Mean spherical equivalent (diopters)	–0.7 (2.2, +4.75 to –7.75)	–0.8 (2.1, +4.50 to –7.75)	.22
Mean intraocular pressure (mm Hg)	15.1 (2.7, 10 to 21)	16.1 (2.5, 10 to 21)	.72
Mean vertical cup-disc	0.31 (0.15, 0.1 to 0.8)	0.30 (0.15, 0.1 to 0.8)	.85
Mean horizontal cup-disc	0.29 (0.14, 0.1 to 0.7)	0.29 (0.14, 0.1 to 0.8)	.20

VA, visual acuity.

^*Standard deviation and range are given in parentheses where appropriate.