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SIGVAN Ladies Reading Glasses Blue Light Blocking Spring Hinge F

$11

SIGVAN Ladies Reading Glasses Blue Light Blocking Spring Hinge F

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Product description


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 blue light blocking glasses

High manufacturing quality, material lightweight and durability.
Metal spring hinges help glasses adapt to face,built-in stainless.
Convenient Set of 5 means you'll have a pair handy wherever you are.
Keep a pair in your favorite reading spots.
Clear lens,No affect reading, and almost no color difference.
Package includes:
5 x blue light blocking Reading Glasses Eyeglass Pouch Cleaning cloth
Size:

Lens width: 52mm/2.04in
Lens height: 38mm/1.49in
Bridge:20mm/0.78in
Arm: 140mm/5.51in
Frame width: 135mm/5.31in
Material:Plastic, which has the characteristics of super lightness, abrasion resistance low friction coefficient and so on.
If you have any problems with our items or services, please feel free to contact us.
We will do our best to solve any problems and provide you with the best customer services.
Thank you so much for support us!

SIGVAN Ladies Reading Glasses Blue Light Blocking Spring Hinge F

  • Online Journals
  • 135
  • 2021 impact metrics
  • Coronavirus Knowledge Hub
  • Diversity, inclusivity & Equity
  • Policy Labs
  • Top article collections
  • Fast, rigorous review
  • Outreach to kids

Numbers

135Online Journals
1000Specialties Represented
260KArticles Published
1.4 BilArticle Views and Downloads
160KOn Board Editors
90Days Average Review Time
International Distribution of Frontiers' Editors
Editor's Affiliations: Top 20
  • University of California System
  • 1937
  • CNRS
  • 1440
  • Chinese Academy of Sciences
  • 1338
  • University of Texas System
  • 1149
  • Harvard University
  • 1124
  • State University System of Florida
  • 868
  • INSERM
  • 833
  • Spanish National Research Council (CSIC)
  • 811
  • National Institutes of Health
  • 808
  • Italian National Research Council (CNR)
  • 767
  • University College London
  • 714
  • Universidade de São Paulo
  • 680
  • University of North Carolina System
  • 651
  • University of Rome
  • 649
  • University of Naples Federico II
  • 593
  • Helmholtz-Gemeinschaft Deutscher Forschungszentren (HZ)
  • 576
  • University of Padua
  • 561
  • Zhejiang University
  • 536
  • University of Bologna
  • 468
  • Shanghai Jiao Tong University
  • 454