Table 2.

Depth range for pigments from the lens surface when imaged by scanning electron microscope (SEM) for each lens type

Pigment location	Lens type	Depth range (from lens surface) (μm)
Below the front surface	1DAD	7.6–9.1
Lens back surface	CC	0.0–4.1
	DM2	0.0–3.4
	ECO	0.0–3.7
	TC	0.0–3.2
Lens front surface	FLC	0.0–4.3
	NAT	0.0–2.3

1DAD: 1-DAY ACUVUE DEFINE, CC: Camax Color, DM2: One-Day Delight Max 2, ECO: Eye Coffret, TC: Ticon Cosmetic Ring Black, FLC: Freshlook One-Day Color, NAT: Naturelle Daily Disposable