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Why Glass? Why Not?


  • Why Glass? Why Not?

    This part one of a series on glass in today's market. The series will continue in LabTalk magazine throughout the year - This first article was originally printed in the Jan/Feb 2015 issue.

    Digital Glass
    I'm fairly sure that most people will agree that glass has the best optical properties out of any material currently used to make optical lenses. There is a reason most equipment, such as a phoropter, tends to have glass lenses instead of using a material like polycarbonate. Having a higher optical quality is important when you're measuring, and it should be important to the care of the patient as well. Some patients may not notice any difference, and some patients can tell right away. For the more discerning patients, the superior quality of glass is something that they may not want to do without once they try it.

    DurabilityPerceptionThe Bad SideAvailabilityIOT, KODAK, and Shamir.

    One of the major drawbacks to glass, compared to plastic, is weight. Glass can be heavy, especially with a high prescription. For low or plano prescriptions, however, there's not much of a noticeable difference between the weight plastic and glass. For higher prescriptions, there are some other options. High index glass is one option, though this can sometimes be a problem as well. As you use higher index glass, lenses do become thinner, but they can also become more dense. A better option is by using a brand new product called Thin & Clear. This material has all of the same properties as regular glass, but Thin & Clear can be made 25% thinner while still passing drop-ball. This means Thin & Clear can have a 1.5mm thickness, while regular glass usually has a 2.0-2.2mm minimum thickness.

    • Innovations in Glass Technology

    Thinner, lighter, better
    • On-the-Job Uses for Glass

    Occupational designs, shop workers, mechanics
    • Sunwear

    Premium eyewear, color availability, durability
    • Premium Brand Names

    IOT, Shamir, KODAK
    • Specialty Applications

    X-Ray, Contrast Enhancement, Glass Blowing

    All of these articles will explore what glass has to offer in specific markets. This will, hopefully, make it easier for an Eyecare Professional to find the right product for their customer. It will also help to dispel some of the myths around glass, and help to show it as the premium product that it is.

    Bill Heffner (the other one)
    FEA Industries

      CCGREEN commented
      Editing a comment
      Round segs in glass are just about undetectable when pt is wearing them, so now you would have a almost invisible add.

    • LilyO
      LilyO commented
      Editing a comment
      Excellent read! Thank you!

    • johann
      johann commented
      Editing a comment
      Thanks for the article, it's a great view and information for me!!
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