Table 3.

Measured FD with respect to visible retinal fields.

Visible field	FD	Visible field	FD
FOV	1.696	$\varnothing$	NaN
OD	0.985	FOV$\backslash$OD	1.692
M	1.394	FOV$\backslash$M	1.645
N	1.545	FOV$\backslash$N	1.620
S	1.446	FOV$\backslash$S	1.654
T	1.308	FOV$\backslash$T	1.676
I	1.397	FOV$\backslash$I	1.660

“NaN” denotes FD cannot be calculated.