Table 1.

Results for visual acuity measurement—system vs human observers.

Measurement Distance	Measurement Time	Liquid Quantity [g]	Fog Density [g/m${}^3$]	Optical Power [uW]	Visual Acuity System	Visual Acuity Human
3 m	60 s	0	-	1400	R7	R7
		0.5	0.87	420	R5	R5/R4
		1	1.74	60	R2	R4
		1.5	2.6	noise	-	R2
		2	3.47	noise	-	-