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Item specifics
  • Item Type: Eyewear Accessories
  • Eyewear Accessories: Lenses
  • Gender: Men
  • Coating: HMC
  • Lenses Material: CR-39
  • Model Number: RTB
Product Description

 

Who use

Do you need bifocals?

Some time after age 40, you will begin to notice the symptoms of presbyopia, including that feeling that your arms "aren\'t long enough" to hold a newspaper or magazine at a position where you can read it clearly.

If you already wear prescription eyeglasses, this generally means you will need to begin wearing multifocal lenses to continue to see clearly at all distances.

Round Top Bifocal

This lens is also called a CFR (Croma Free Round - In reference to the glass fused lenses), and a kryptok lens. The round top bifocal comes in sizes of 22, 25 & 28 mm (measured at the widest point of the bifocal), however some sizes and mediums in this lens have been phased out and are no longer available.

The biggest reason for using the Round Top Bifocal is the bifocal line is not as obvious as in the Flat Top (Note the subtle bifocal in the example on the right). It is not invisible but when worn it tends to be much less noticeable. Functionally, it is the same as the flat top except the patient must look a little further down into the bifocal to get the same width due to the shape of the lens. 

 

 

Packaging Details
  • Unit Type: Pair
  • Package Weight: 0.2kg (0.44lb.)
  • Package Size: 18cm x 12cm x 10cm (7.09in x 4.72in x 3.94in)
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Packaging Details
  • Unit Type: Pair
  • Package Weight: 0.2kg (0.44lb.)
  • Package Size: 18cm x 12cm x 10cm (7.09in x 4.72in x 3.94in)
Payment
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