How are contact lenses made?


    There are two types of processes for manufacturing contact lenses: Lathe cutting and injection molding.

    • Lathe cutting involves taking the hard plastic material and using computer controlled cutting tools to cut the contact lenses into their correct shapes. Once they’re cut into the proper shape, the contact lenses are hydrated to soften.
    • Injection molding involves melting the plastic material and injecting it into molds to create the correct shape. The contacts are then cooled, removed from the molds and hydrated to soften.