Are Contact Lenses Made of Glass? Explore Their Materials, History, and Types
Contact lenses used to be made of glass. Now, hard contact lenses are made from materials like polymethyl methacrylate (PMMA) or Plexiglas. Modern soft lenses are made from hydrogel or silicon hydrogel. Unlike soft lenses, hard lenses can be custom-fit to individual needs. The introduction of flexible materials in the mid-20th century revolutionized contact lens … Read more