Table 1. Visual characteristics of the 11 observers.

Observer	Gender	Age	Type	Eye	Visual Acuity	Refractive Errors	Eye Alignment
		(years)			(logMAR)
Flanked Letter Training
GDW	M	23	Strab	OD	20/32+1 (20/20+2)	+3.25	6Δ RET
				OS	20/12.5−1	+2.50
BP	M	67	Strab	OD	20/32+2	−7.50
				OS	20/400−2 (20/100−2)	−2.00/−2.25×005	10Δ LET
AS	F	32	Strab	OD	20/63−1 (20/50+2)	pl/−1.00×120
				OS	20/16−1	−4.00	8–10Δ LET
JHS	F	53	Strab	OD	20/16+1	+1.25/−0.50×150
				OS	20/125−2 (20/63)	+1.00/−0.50×160	>30Δ LXT
JS	F	26	Non-strab	OD	20/25−2 (20/25+2)	+1.00	4Δ EsoPhoria
			(Aniso)	OS	20/12−2	+0.25
Isolated Letter Training
SP	F	22	Strab	OD	20/80−2 (20/40−1)	+0.75/−1.50×090	10–12Δ RXT
				OS	20/12	−0.25
SDW	F	46	Strab	OD	20/12.5−1	+2.00	6Δ RHyperT
				OS	20/40−1 (20/25−1)	+3.00/−0.75×095	25Δ LXT
PT	F	40	Strab	OD	20/12.5+1	pl
				OS	20/32+2 (20/25+2)	+1.75/−0.50×005	>25Δ LET
RE	F	27	Strab	OD	20/40−1 (20/25−2)	−0.50/−3.75×150	20–25Δ RET
				OS	20/20−2	−2.00/−3.50×025
JL	M	30	Non-strab	OD	20/16+1	−1.50/−0.25×160	4Δ EsoPhoria
			(Aniso)	OS	20/63+1 (20/50+2)	+0.75/−0.75×170
LA	F	47	Non-strab	OD	20/50−2 (20/50−2)	+4.25/−4.00×072
			(Aniso)	OS	20/16−2	+0.25/−1.00×115

Acuities are measured using a Bailey-Lovie Chart. Values in parentheses represent single-letter acuities.