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Anti Blue Light Ray CR-39 Resin Aspheric Optical Prescription Lenes
Anti Blue Light Ray CR-39 Resin Aspheric Optical Prescription Lenes
Anti Blue Light Ray CR-39 Resin Aspheric Optical Prescription Lenes
Anti Blue Light Ray CR-39 Resin Aspheric Optical Prescription Lenes

Anti Blue Light Ray CR-39 Resin Aspheric Optical Prescription Lenes

Regular price
€33,95
Sale price
€33,95
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How to choose lens index

Lens index reflects lens thickness, there is 1.56, 1.61, 1.67 index etc.

The higher lens index is, the thinner lens is. 1.67 is thinner than 1.61 than 1.56 at the same degree.

Lens thickness also depends on frame size. The bigger frame is, the thicker lens is.

 

1.56 index suggestion degree:

SPH: -0.00 ~ -4.00;CYL: -0.50~-2.00

SPH: +0.50~+4.00;CYL:+0.50~+2.00

 

1.61 index suggestion degree:

SPH: -0.00 ~ -6.00;CYL: -0.50~-2.00 

SPH: +4.00~+6.00;CYL:+0.50~+2.00

 

1.67 index suggestion degree:

SPH: -3.00 ~ -8.00;CYL: -0.50~-2.00 

SPH: +4.00~+8.00;CYL:+0.50~+2.00 

 

If your Cylinder2.00, you need to pay extra 10usd for high astigmatism customization.  ($10 link here)

 

If you have any question, please contact with us  (service@cinily.net)