Table 3.

Medians and ranges of distance visual acuity (logMAR) in the better eye, and percentage correct FFR and FED discrimination with the optimal refractive correction and with the telescopic low vision device. Median gains for FFR and FED are 48% and 50% respectively

	Median		Range
Variable	Optimal	Ocutech VES	Optimal	Ocutech VES
VA (n = 30) logMAR	0.82	0.42	0.40 to 1.38	−0.06 to 0.80
FFR (n = 21) percentage correct recognition	26%	68%	0 to 80%	20 to 100%
FED (n = 28) percentage correct recognition	46%	69%	0 to 73%	30 to 100%