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Opthalmic Frames
Frame Styles




Ophthalmic frames may be divided into two broad categories of materials, plastic and metal. The table of the opposite page itemizes the most popular materials and describes the general characteristics of each. As indicated in the diagram above the basic frame styles used include the full frame, combination frame, half eye, full rimless, and semi rimless. The styles we commonly call rimless are actually semi-rimless designs since there is a bar connecting the endpieces to the bridge. The lenses of a semi-rimless frame may be mounted in several different ways. These include the screw mounting, where a screw is placed through a drilled hole in the lens then attached to the frame. One type of screw mounted design is called a numont mounting where each lens is held in place by only one screw. Some lenses are tension mounted where clips attached to the eyewire fit into notches in the lens and are held it in place with tension. Tension mountings are sometimes referred to as balgrip mountings. Nylon mounted frames are the most popular semi-rimless design currently used. In this design, a nylon cord attached to the eyewire fits into a groove located around the periphery of the lens. A nylon mounted rimless design is safe, durable, relatively easy to work with and fashionable.


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