Table 2.

Mean (S.D.) and range of binocular test outcome scores

Study group	Binocular test	Proportion measurable	Mean (S.D.)	Range
Adult
n = 20	log Stereoacuity (RPST) (arcsec)	50%	2.37 (0.43)	1.78–2.90
age 24.8 ± 7.2	BF score	100%	3.38 (1.14)	1.78–5.00
[21–63] years	log Contrast Balance Index	100%	0.78 (0.45)	0.11–1.59
	Threshold RDS (arcsec)	65%	643 (976)	40–3141
	log RDS	65%	2.33 (0.66)	1.60–3.50
Child
n = 77	log Stereoacuity (RPST/Butterfly)	61%	2.25 (0.43)	1.60–3.30
age 8.3 ± 1.7	BF score	100%	3.02 (1.07)	1.60–5.00
[6.1–12.7] years	log Contrast Balance Index	100%	0.56 (0.55)	−0.25–2.00

RDS, Threshold Random Dot Stereogram; RPST, Randot Preschool Stereoacuity Test.