When people inch closer to forty, they may find that their eyes are not adjusting to distances as they used to, the lens of the eyes begin to lose flexibility.  It becomes difficult to focus on close objects.  This condition is called presbyopia.  It can be managed to a large extent with the use of bifocals.

1.56Flat top Round toplens with the midde indexSPH:+3.00~-3.00 ADD:+1.00~+3.00DIA: φ28/70

1.49 Flat top, Round top and invisible (Blend bifocal)SPH:-3.00~+3.00 ADD:+1.00~+3.00DIA: φ28/65, φ28/70

1.59 PC Flat top bifocal lens offer extremely greater impact, scratch resistance.Ultramodern new materials.Diameter:65/72mm

Index
Lens index is a number that describes how thick or thin your
lenses are. The higher a lens' index is, the thinner it becomes.
Higher prescriptions require higher index lenses, while lower
prescriptions require lower index lenses.

Delivery & Packing

Envelops(For choice):

1) Standard white envelops

2) Our brand "Nuoyang" envelops

3) OEM envelops with customer's Logo

Cartons: standard cartons:50CM*45CM*33CM(Every carton can include aroud 500 pairs ~600 pairs finished lens, 220pairs semi-finished lens.  22KG/CARTON,0.074CBM)

Nearest shipping Port  : Shanghai port