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CR-39 Standard Plastic Lens Material
CR-39 Standard Plastic Lenses suitable for general purpose use. These lenses offer outstanding optical quality and durability. All of our lenses are manufactured according to ANSI Standards and include a Scratch Resistant Coating.
- Lens Design Options:
- Single Vision
- Bifocal
- Progressive
- Lens Treatment Options:
- Anti-Reflective Coating
- Polarized Sun Lenses with or without Mirror Coating
- Transition/Photochromatic Technology
- Recommended for:
- Prescriptions with Sphere values from Plano to +/- 3.00.
Please Note:
- This product can be added to your order from your “Frame” Order Page.
- Valid prescription required.
PD Measurement
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Pupillary Distance (PD) or interpupillary distance is the distance between the centers of the pupils in each eye.
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The industry standard is to measure in millimeters.
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This measurement is used when preparing to make prescription glasses.
How do I measure my Pupillary Distance (PD)?
- Help from a friend:
- Place a millimeter ruler on the bridge of your nose.
- Have a friend face you about arms length away.
- Have your friend measure the distance between the center of your pupils (the black dots in the middle of your eyes).
- Measure Yourself:
- Look in the mirror while wearing glasses.
- Draw dots on the lenses where your pupils are (using a non-permanent magic marker or highlighter)
- Take the glasses off and measure the distance between the dots.
- Optometrist or Optician:
- Most eye doctors and/or opticians will take the measurement for you in exchange for a very small service fee.
- Guideline:
- Most Adults measure between 55mm -65mm.
- Most Children measure between 42mm - 54mm.
Now you know your PD Measurement!
A valid prescription with PD Measurement is required to order your new prescription glasses.
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