Table 1.

Properties of Verofilcon A and Etafilcon A Lenses

	Verofilcon A	Etafilcon A
Refractive index (hydrated)	1.4	1.4
Light transmittance	≥90% @640 nm, −3.00 D	≥85% @640 nm, −3.00 D
Oxygen permeability (Dk)	90 × 10−11 (cm2/sec) (mL O2/mL × mmHg)	21.4 × 10−11 (cm2/sec) (mL O2/mL × mmHg)
Water content	51% by weight in normal saline	58% by weight in normal saline
Diameter	14.2 mm	14.2 mm
Spherical power range	−1.00 to −6.00 D (in 0.25 D steps)	−1.00 to −6.00 D (in 0.25 D steps)
Base curve	8.3 mm	8.5 mm