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White 1.499 Index Flat Top Bifocal Lenses Without Coating CR39 Material
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White 1.499 Index Flat Top Bifocal Lenses Without Coating CR39 Material

  • 1.499 FT-28 UC White Bifocal
  • Aogang
  • 1.499 FT-28 UC White Bifocal
  • 1.499
  • 70MM
  • CR39
  • 58
  • 1.32
  • 97%
  • UC/White
  • SPH:-300~+300, ADD:+100~+350
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Product Description

Production1.499 FT-28 UC
MonomerCR39
Diameter70MM
Abbe value58
Specific Gravity1.32
Transmission>97%
Flat top segment28
Guarantee years5 years
Power rangeSPH:-300~+300, ADD:+100~+350


Features

Features:

 

● CR-39 lenses use the imported CR-39 raw monomer, which is one of the longest history of resin materials and the most widely sold lens in middle level country. 

 

1) Hardness: The better other 1.56/1.61/1.67/1.74 index lenses in hardness and toughness, high impact resistance.

 

2) Tintable: The more easily tinted than 1.56/1.61/1.67/1.74 index lenses.


3) Transmittance: The higher transmittance as compared with other 1.56/1.61/1.67/1.74 index lenses.


4) ABBE: The higher ABBE value providing the most comfortable vision.

 

● The advantage of the FT bifocal lens.

1) This is a very convenient type of lens  that  allows the wearer to focus on objects  both at close range and far range through  a  single lens. 

 

2)This type of lens is designed  to enable  viewing of objects in the distance, at  close range and in the intermediate  distance with corresponding changes in  power for each distance.

White 1.499 Index Flat Top Bifocal Lenses Without Coating CR39 Material

● How bifocal lens work?

 

White 1.499 Index Flat Top Bifocal Lenses Without Coating CR39 Material

 

Bifocal lenses are perfect for people suffering from presbyopia- a condition in which a person experiences blurred or distorted near vision while reading a book. To correct this problem of distant and near vision, bifocal lenses are used. They feature two distinct areas of vision correction, differentiated by a line across the lenses. The top area of the lens is used for seeing distant objects while the bottom part corrects the near-vision

 

 


Technical Data

 

White 1.499 Index Flat Top Bifocal Lenses Without Coating CR39 Material


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