Table 5. Spearman correlation coefficients between glaucoma patients’ (n = 23) visual field loss (percentage of points below 25 dB sensitivity threshold per quadrant of the visual field), and number of letter misses and letter reaction time.

VF location	VF type	Letter misses	LRT
Upper-left	IVF	0.842	0.574
Upper-right	IVF	0.791	0.451
Lower-left	IVF	0.237	0.333
Lower-right	IVF	0.216	0.308
Upper-left	Worse eye	0.501	0.263
Upper-right	Worse eye	0.481	0.231
Lower-left	Worse eye	-0.061	0.156
Lower-right	Worse eye	-0.068	0.211
Upper-left	Better eye	0.832	0.631
Upper-right	Better eye	0.748	0.504
Lower-left	Better eye	0.302	0.344
Lower-right	Better eye	0.297	0.378

p < 0.05 for ρ ≥ 0.42; LRT = letter reaction time; VF = visual field.