What is a multifocal progressive lens?

The lens provide a gradual transition in strength from bottom to top.
Progressive multifocal glasses are suitable for reading and looking at distant objects without frequent picking.
It have 3 degrees in one pair of glasses.
That allows you to do close-up work (like reading and writing),
middle-distance work (like using computer),
or distance viewing (like driving and walking).
It allows people to see clearly at different distances,just one pair of eyeglasses for everything.

What is Blue Light?

Blue light has a short wavelength and is likely to scatter, causing fatigue of the ciliary muscles, which are the adjusting muscles that adjust the lens, and may cause eye strain.
Blue light can cause a wide range of risks including eye strain, sleep disorders, damage to the retina, dry eyes, stiff shoulders, and headaches.
For those who operate smartphones and PCs or watch TV, it is recommended to take measures immediately with blue light blocking glasses.

SIGVAN Progressive Multifocal Blue Light Blocking Reading Glasses

High manufacturing quality, material lightweight and durability.
Metal spring hinges help glasses adapt to face,built-in stainless.
Convenient Set of 2 means you'll have a pair handy wherever you are.
Keep a pair in your favorite reading spots.

Size:

Lens width:52mm/2.04in
Lens height:42mm/1.64in
Bridge:19mm/0.74in
Arm:145mm/5.71in
Frame width:140mm/5.51in
Material:Plastic, which has the characteristics of super lightness, abrasion resistance low friction coefficient and so on.

Package includes:

4 x Progressive Multifocal Blue Light Blocking Reading Glasses
4 x Eyeglass Pouch
Cleaning cloth

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