Table 1. The designs and materials of Progressive contact lenses.

	Multistage PCL	Proclear PCL
Brand	2 weeks multistage	Proclear
Material	Group IV - Ioinc high water content	Omfilcon A
Modality	2 weeks	1 month
Power(s)	Type (B) Add +1.50	Type (D) Add +1.50
Base curve	8.6 mm	8.7 mm
Diameter	14.2 mm	14.4 mm
a.) Spherical distance zone diameter b.) Aspheric multifocal zone (width/Dia) c.) Spherical near zone (width/Dia)	2.5 ɸ mm 0.5mm/ 2.5 ɸ to 3.5 ɸ mm 2.25mm/ 3.5 ɸ to 8.0 ɸ mm	2.3 ɸ mm 1.35 mm/ 2.3 ɸ to 5.0 ɸ mm 1.75mm/ 5.0 ɸ to 8.5 ɸ mm
Water content	58%	62%