What is the difference between progressive lenses and bifocals? MT70159

Written by Optician Club on . Posted in Eyeglasses Frames

Optician Knowledge:
Q: What is the difference between progressive lenses and bifocals?

A: Similarities
Bifocal and progressive lenses are both multifocal lenses that enable you to see from the distance from the the top of lens to see in close proximity through the bottom on the lens.

Function of a bifocal lens
A bifocal lens has two areas of vision correction, one out of the very best for distance then one inside bottom for close work, usually as much as about 20 inches.

Features of a bifocal lens
Bifocals ordinarily have a distinct line defining the reading area of the lens. The most typical form of bifocal, known as the D-segment, has what appears to be an upside-down half moon inside bottom on the lens.

Function of a progressive lens
Like bifocal lenses, progressive lenses (also known as "invisible bifocals") also allow you to see inside distance over the the top of lens. Progressive lenses produce an area in the middle minimizing part, however, that allows you to see objects up to 36 inches away.

Features of a progressive lens
Progressive lenses do not possess visible lines, but when you peer closely, you can see a small mountain-shaped area within the bottom with the lens.


Product Info

progressive lenses and bifocals

progressive lenses and bifocals

  • Model No: MT70159
  • Highlight: Durable and Fashionable
  • Gender: Man’s Eyewear
  • Age Group: Adults
  • Frame Size: 54-17-138
  • Shape: Rectangle Eyewear
  • Spring Hinge: No
  • Color: Black
  • Available Color: Gun Front and Black Temple
  • Material: Stainless Steel
  • Tips: No
  • Bridge: Adjustable nose pads
  • Original: ShenZhen
  • Rim: Full-Rim Spectacle
  • Certificate: CE and FDA are certificated

Sales Info:

  • Warranty:1-Year Warranty.
  • Availability: In Stock for Eyewear Distributor
  • Payment Terms: Paypal, Western Union
  • Minimum Order:12pcs/Model, 300pcs in total
  • Market Preference: Asia Eyewear, Africa Spectacle Frame
  • Eyewear Quote

Shipping Info:

  • Package: 1pcs/Poly-bag, 12pcs/Inner Box, 300PCS/Carton
  • Carton Box Size: 84*27*31
  • Cross Weight: 12KGS
  • HS Code: 90031900
  • Delivery Time: Within 7 days upon received your payment
  • FedEx/DHL/UPS/DPEX/ARAMEX/TNT/EMS

 

 

 

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