Eyeglass Materials at Five Points Optical

  • Five Points Eye Care Services

    Many different eyeglass materials are available today. Gone are the days of simplicity in which glass, or even plastic was king. Today's lenses offer superior optical qualities, thinner profiles, lighter weight and safer impact standards. Lenses come with options ranging from variable, photochromic lens tints to anti-reflective coatings. Your prescription, frame selection and intended use help guide us in selecting the lens material that is most appropriately suited to your needs. Not all lens designs are available in all materials. Not all lens materials work well with all lens options. The following is a guide describing modern lens materials that may help you understand the complex nature of eyewear selection.


    CR-39
    � Light weight
    � Impact resistant*
    � Available in nearly all lens styles
    � Available in most prescriptions
    � Can be tinted
    � Can be coated
    � Available with photochromic properties
    � Inexpensive


    Polycarbonate
    � Light weight
    � Most impact resistant material available
    � 30-40% thinner than CR-39
    � Absorbs nearly 100% of both UV-A and UV-B radiation
    � Automatically scratch-resistant
    � Available in many lens styles
    � Available in most prescriptions
    � Can be coated
    � Available with photochromic properties
    � Less expensive than Trivex or High-index lenses


    Trivex
    � Light weight
    � Highly impact resistant
    � 30-40% thinner than CR-39
    � Absorbs nearly 100% of both UV-A and UV-B radiation
    � Automatically scratch-resistant
    � Available in very limited lens styles
    � Available in many prescriptions
    � Can be coated
    � Available with photochromic properties *
    � Less expensive than High-index lenses


    Mid-Index
    � Light weight
    � Impact resistant*
    � 25-30% thinner than CR-39
    � Absorbs nearly 100% of both UV-A and UV-B radiation
    � Automatically scratch-resistant
    � Available in limited lens styles
    � Available in most prescriptions
    � Can be tinted
    � Can be coated
    � Available with photochromic properties
    � Less expensive than High-index lenses


    High-Index
    � Light weight
    � Impact resistant*
    � 35-40% thinner than CR-39
    � Absorbs nearly 100% of both UV-A and UV-B radiation
    � Automatically scratch-resistant
    � Available in many lens styles
    � Available in most prescriptions
    � Can be tinted
    � Can be coated
    � Available with photochromic properties


    Glass
    � Impact resistant*
    � Most scratch resistant*
    � Available in many lens styles
    � Available in many prescriptions
    � Can be tinted*
    � Can be coated
    � Available with photochromic properties